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Equivalence Point Solutions Library

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Equivalence Point

Q. Which of the following statement regarding pH titrations is/are correct?I The titrant is the reagent placed in the burette that is added dropwise t...

Solved • Feb 17, 2020

Equivalence Point

Q. What volume of a 0.5 M aqueous solution of HCl is needed to reach the equivalence point in a titration of 25 mL of a 0.1 M aqueous solution of pota...

Solved • Feb 10, 2020

Equivalence Point

Q. A 0.70 g sample of a weak monoprotic acid was dissolved in 150 mL of water and titrated with a 0.055 M solution of KOH at 25°C. At the half-equival...

Solved • Dec 20, 2019

Equivalence Point

Q. A 0.70 g sample of a weak monoprotic acid was dissolved in 150 mL of water and titrated with a 0.055 M solution of KOH at 25°C. At the half-equival...

Solved • Dec 20, 2019

Equivalence Point

Q. Hydrazine (NH2NH2) has a Kb = 3.0 x 10-6. If 100.0 mL of a 0.5000 M aqueous hydrazine solution is mixed with 100.0 mL of 0.5000 M aqueous hydrochlo...

Solved • Dec 12, 2019

Equivalence Point

Q. What is the molarity of a NaOH solution if 39.1 mL of a 0.112 M H2SO4 solution is required to neutralize a 25.0-mL sample of the NaOH solution (as ...

Solved • Oct 25, 2019

Equivalence Point

Q. Potassium sorbate, KC6H7O2 (molar mass 150 g/mol) is commonly added to diet soft drinks as a preservative. A stock solution of KC6H7O2(aq) of known...

Solved • Aug 25, 2019

Equivalence Point

Q. Titration of a strong acid with a strong base. The pH curve for titration of 50.0 mL of a 0.100 M solution of hydrochloric acid with a 0.100 M solu...

Solved • Jan 3, 2019

Equivalence Point

Q. The pH at the equivalence point is above 7.00 for the weak acid titration. Describe the reasons why this statement is true.

Solved • Jan 3, 2019

Equivalence Point

Q. A saturated solution of Cd(OH)2 is shown in the middle beaker. If hydrochloric acid solution is added, the solubility of Cd(OH)2 will increase, cau...

Solved • Jan 3, 2019

Equivalence Point

Q. Assume that 31.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a 0.10 M solution of the monoprotic strong acid ...

Solved • Jan 3, 2019

Equivalence Point

Q. Calculate the pH at the equivalence point in titrating 0.120 M solutions of each of the following acids with a solution 0.090 M in NaOH.chlorous ac...

Solved • Jan 3, 2019

Equivalence Point

Q. What is the pH at the equivalence point when 0.10 M HNO3 is used to titrate a volume of solution containing 0.30 g of KOH?

Solved • Jan 3, 2019

Equivalence Point

Q. The samples of nitric and acetic acid shown here are both titrated with a 0.100 M solution of NaOH(aq).Determine whether each of the following stat...

Solved • Jan 3, 2019

Equivalence Point

Q. The samples of nitric and acetic acid shown here are both titrated with a 0.100 M solution of NaOH(aq).Determine whether each of the following stat...

Solved • Jan 3, 2019

Equivalence Point

Q. How many milliliters of 0.110 M  HCl are needed to titrate each of the following solutions to the equivalence point?130.0 mL of a solution that con...

Solved • Jan 3, 2019

Equivalence Point

Q. Predict whether the equivalence point of each of the following titrations is below, above, or at pH=7.NH3 titrated with HCl

Solved • Jan 3, 2019

Equivalence Point

Q. Predict whether the equivalence point of each of the following titrations is below, above, or at pH=7.KOH titrated with HBr

Solved • Jan 3, 2019

Equivalence Point

Q. Two 26.0  mL samples, one 0.100 M HCl and the other 0.100 M HF, were titrated with 0.200 M KOH. Answer each of the following questions regarding th...

Solved • Jan 3, 2019

Equivalence Point

Q. The volume required to reach the equivalence point of an acid-base titration depends on the volume and concentration of the acid or base to be titr...

Solved • Jan 3, 2019

Equivalence Point

Q. A 25.0 mL sample of an unknown HBr solution is titrated with 0.100 M NaOH. The equivalence point is reached upon the addition of 18.88 mL of the ba...

Solved • Jan 3, 2019

Equivalence Point

Q. Three 15.0 mL acid samples – 0.40 M HA, 0.40 M HB, and 0.40 M H2C – are all titrated with 0.100 M NaOH. HA is a weak acid, HB a strong acid, and H2...

Solved • Jan 3, 2019

Equivalence Point

Q. Consider the following three solutions:(i) 0.10 M solution of a weak monoprotic acid(ii) 0.10 M solution of strong monoprotic acid(iii) 0.10 M solu...

Solved • Jan 3, 2019

Equivalence Point

Q. A 0.552-g sample of ascorbic acid (vitamin C) was dissolved in water to a total volume of 20.0 mL and titrated with 0.1103 M KOH, and the equivalen...

Solved • Jan 3, 2019

Equivalence Point

Q. A 0.552-g sample of ascorbic acid (vitamin C) was dissolved in water to a total volume of 20.0 mL and titrated with 0.1103 M KOH, and the equivalen...

Solved • Jan 3, 2019

Equivalence Point

Q. A 0.229-g sample of an unknown monoprotic acid was titrated with 0.112 M NaOH and the resulting titration curve is shown  in the figure.Determine t...

Solved • Jan 3, 2019

Equivalence Point

Q. A 0.446-g sample of an unknown monoprotic acid was titrated with 0.105 M KOH and the resulting titration curve is shown in the figure.Determine the...

Solved • Jan 3, 2019

Equivalence Point

Q. Two 21.0 mL samples, one 0.200 M KOH and the other 0.200 M CH3NH2, were titrated with 0.100 M HI. Answer each of the following questions regarding ...

Solved • Jan 3, 2019

Equivalence Point

Q. What is the pH at the half-equivalence point in the titration of a weak base with a strong acid? The pKb of the weak base is 8.75.

Solved • Jan 3, 2019

Equivalence Point

Q. A 0.167-g sample of an unknown acid requires 27.8 mL of 0.100 M NaOH to titrate to the equivalence point. Elemental analysis of the acid gives the ...

Solved • Nov 12, 2018

Equivalence Point

Q. Consider the titration of a generic weak acid HA with a strong base that gives the following titration curve:On the curve, indicate the points that...

Solved • Nov 7, 2018

Equivalence Point

Q. Consider the titration of a generic weak acid HA with a strong base that gives the following titration curve:On the curve, indicate the points that...

Solved • Nov 7, 2018

Equivalence Point

Q. The titration of a 20.0-mL sample of an H2SO4 solution of unknown concentration requires 22.51 mL of a 0.156 M KOH solution to reach the equivalenc...

Solved • Oct 31, 2018

Equivalence Point

Q. What volume (in mL) of 0.200 M NaOH do we need to titrate 36.00 mL of 0.140 M HBr to the equivalence point?

Solved • Oct 31, 2018

Equivalence Point

Q. A 31.00 mL sample of an unknown H3PO4 solution is titrated with a 0.120 M NaOH solution. The equivalence point is reached when 26.43 mL of NaOH sol...

Solved • Oct 31, 2018

Equivalence Point

Q. In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 20.00 mL of 0.0502 M NaOH ...

Solved • Oct 15, 2018

Equivalence Point

Q. In a titration experiment, a student used 24.13 mL of 0.111 M sodium hydroxide to neutralize 20.00 mL of a hydrochloric acid solution. What was the...

Solved • Jul 23, 2018

Equivalence Point

Q. A volume of 80.0 mL of a 0.610 M HNO3 solution is titrated with 0.150 M KOH. Calculate the volume of KOH required to reach the equivalence point. E...

Solved • Jul 17, 2018

Equivalence Point

Q. Calculate the volume, in milliliters, of a 0.19 M NaOH solution that will completely neutralize each of the following: Part A 30.0 mL of a 0.295 M ...

Solved • Jul 17, 2018

Equivalence Point

Q. Part AWhat is the molarity of a solution of HCl if 6.00 mL of the HCl solution is titrated with 33.0 mL of a 0.170 M NaOH solution? HCl (aq) + NaOH...

Solved • Jul 17, 2018

Equivalence Point

Q. What is the concentration of an HBr solution if 31.0 mL of a 0.200 M NaOH solution are needed to titrate 55.0 mL of the acid? 

Solved • Jul 17, 2018

Equivalence Point

Q. What volume, in milliliters, of 0.46 M Ca(OH)2 is needed to completely neutralize 203.6 mL of a 0.31 M HI solution?

Solved • Jul 16, 2018

Equivalence Point

Q. What volume of a 0.182 M hydrobromic acid solution is required to neutralize 17.2 mL of a 0.191 M calcium hydroxide solution?  

Solved • Jul 10, 2018

Equivalence Point

Q. An aqueous solution of hydrobromic acid is standardized by titration with a 0.152 M solution of sodium hydroxide. If 28.6 mL of base are required t...

Solved • Jul 3, 2018

Equivalence Point

Q. What volume of a 0.187 M potassium hydroxide solution is required to neutralize 18.8 mL of a 0.300 M hydroiodic acid solution? 

Solved • Jul 3, 2018

Equivalence Point

Q. By titration it is found that 88.3 mL of 0.101 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentration of the HCl soluti...

Solved • Jul 2, 2018

Equivalence Point

Q. Suppose you have 50.1 mL of a solution of HC 2H3O2. You titrate it with a 0.10 M solution of NaOH and use 15.5 mL to reach the endpoint. What is th...

Solved • Jun 25, 2018

Equivalence Point

Q. What volume of a 0.306 M perchloric acid solution is required to neutralize, 11.3 mL of a 0.137 M potassium hydroxide solution? 

Solved • Jun 19, 2018

Equivalence Point

Q. An aqueous solution of  calcium hydroxide is standardized by titration with a  0.116 M solution of hydroiodic acid.If 23.6 mL of base are required ...

Solved • Jun 19, 2018

Equivalence Point

Q. The strong acid HNO3 is titrated with the strong base KOH. What substance(s) are present at the equivalence point? HNO3 KOH HNO3 and KNO3 KOH and K...

Solved • Jun 4, 2018

Equivalence Point

Q. Which of the following titrations result in an acidic solution at the equivalence point?a. HCl titrated with NaOHb. KF titrated with KOHc. C5H5N ti...

Solved • May 30, 2018

Equivalence Point

Q. What is the concentration of an HCI solution if 39.0 mL of a 0.100M KOH solution are needed to titrate 45.0 mL of the acid? 

Solved • May 21, 2018

Equivalence Point

Q. A chemistry student weighs out 0.165 g of hypobromous acid (HBrO) into a 250 mL volumetric flask and dilutes to the mark with distilled water. He p...

Solved • Apr 9, 2018

Equivalence Point

Q. 19.0 mL of 0.126 M diprotic acid (H 2A) was titrated with 0.1017 M KOH. The acid ionization constants for the acid are Ka1= 5.2x10-5 and Ka2= 3.4x1...

Solved • Apr 5, 2018

Equivalence Point

Q. In the titration of acetic acid (CH 3COOH) with NaOH, when one-half of the acetic acid has been titrated (to the half-equivalence point), the two (...

Solved • Mar 23, 2018

Equivalence Point

Q. 18.0 mL of 0.126 M diprotic acid (H 2A) was titrated with 0.1021 M KOH. The acid ionization constants for the acid are Ka1 = 5.2 x 10 -5 and Ka2 = ...

Solved • Mar 23, 2018

Equivalence Point

Q. Match each type of titration to its pH at the equivalence point.Weak acid, strong baseStrong acid, strong baseWeak base, strong acidpH less than 7p...

Solved • Mar 23, 2018

Equivalence Point

Q. When titrating a weak monoprotic acid with NaOH at 25° Celsius. thea. pH will be less than 7 at the equivalence pointb. pH will be equal to 7 at th...

Solved • Mar 22, 2018

Equivalence Point

Q. When titrating a strong monoprotic acid and KOH at 25° Celsius, thea. pH will be less than 7 at the equivalence pointb. pH will be greater than 7 a...

Solved • Mar 22, 2018

Equivalence Point

Q. A buffer contains significant amounts of acetic acid and sodium acetate.a. Write a molecular equation showing how this buffer neutralizes added aci...

Solved • Mar 22, 2018

Equivalence Point

Q. How many milliliters of 0.100 M NaOH are needed to completely neutralize 25.0 mL of 0.250 M H3PO4 ?a. 62.5 mL       b. 125 mL       c. 31.3 mL     ...

Solved • Mar 20, 2018

Equivalence Point

Q. 6.74 g of the monoprotic acid KHP (MW = 204.2 g/mol) is dissolved into water. The sample is titrated with a 0.703 M solution of calcium hydroxide t...

Solved • Mar 15, 2018

Equivalence Point

Q. 100.0 mL of a natural water sample was titrated with NaOH. 13.91 mL of 0.1933 M NaOH solution was required to titrate the water sample to a light p...

Solved • Dec 20, 2017

Equivalence Point

Q. Calculate the mass of benzoic acid (molar mass = 122.12 g/mol) sample titrated if 29.11 mL of a standardized 0.5130 mol/L NaOH solution was require...

Solved • Dec 14, 2017

Equivalence Point

Q. When titrating a strong monoprotic acid and KOH at 25°C, the A) pH will be less than 7 at the equivalence point. B) pH will be greater than 7 at ...

Solved • Jun 16, 2017

Equivalence Point

Q. A 25.00 mL sample of NaOH is titrated with 45.5 mL of 0.100 M H2SO4(aq). What is the concentration of the NaOH solution?a. 0.091 Mb. 0.182 Mc. 0.36...

Solved • May 24, 2017

Equivalence Point

Q. In a strong base with weak acid titration, which of the following is correct? A. the equivalence point is greater than 7 because only the conjugat...

Solved • Apr 20, 2017

Equivalence Point

Q. Nitrous acid, HNO2 has a Ka of 4.6 x 10-4. If the 100 mL of a 0.2 M solution of nitrous acid is mixed with a 200 mL of a 0.1 M solution of NaOH whi...

Solved • Jan 24, 2017

Equivalence Point

Q. What volume of a 0.025 M calcium hydroxide, Ca(OH) 2, solution is needed to completely neutralize 75 mL of a 0.50 M perchloric acid solution, HClO4? 

Solved • Oct 18, 2016

Equivalence Point

Q. Given the concentration of a strong base solution (assume a Group IA metal with hydroxide), what is the correct procedure to determine the pH of th...

Solved • Oct 17, 2016

Equivalence Point

Q. Consider the titration of 15.0 mL of 0.200 M H 3PO4(aq) with 0.200 M NaOH(aq). What is/are the major species in solution after the addition of 15.0...

Solved • Sep 21, 2016

Equivalence Point

Q. The equivalence point during titration of an acid with a base may not occur at a pH of 7.0 because 1. A solution containing a weak acid or a weak ...

Solved • Sep 21, 2016

Equivalence Point

Q. At the stoichiometric point in the titration of 0.260 M CH 3NH2(aq) with 0.260 M HCl(aq),  1. [CH3NH2] = 0.130 M. 2. the pH is less than 7. 3. [...

Solved • Sep 21, 2016

Equivalence Point

Q. When titrating a WEAK monoprotic acid with NaOH at 25°C, the A) pH will be less than 7 at the equivalence point. B) pH will be equal to 7 at the ...

Solved • Aug 27, 2016

Equivalence Point

Q. When titrating a STRONG monoprotic acid and KOH at 25°C, the A) pH will be less than 7 at the equivalence point. B) pH will be greater than 7 at ...

Solved • Aug 27, 2016

Equivalence Point

Q. Which of the following is TRUE? A) The equivalence point is where the amount of acid equals the amount of base during an acid-base titration. B) ...

Solved • Aug 27, 2016

Equivalence Point

Q. How many mL of 0.024 M HCIO 4 would be required to reach the equivalence point in a titration of 32.00 mL of 0.017 M Ca(OH)2?A. 22.67 mLB. 45.33 mL...

Solved • Aug 25, 2016

Equivalence Point

Q. When the analyte HF(aq) is titrated with NaOH(aq), the solution at the stoichiometric point is _______ because _____. (a) acidic; of the hydrolysi...

Solved • May 17, 2016

Equivalence Point

Q. What volume (in mL) of 0.0500 M phosphoric acid is needed to titrate completely 25.0 mL of 0.150 M barium hydroxide solution to a phenolphthalein e...

Solved • Apr 25, 2016

Equivalence Point

Q. The following pictures represent solutions at various points in the titration of a weak acid HA with aqueous KOH. Unshaded spheres represent H atom...

Solved • Apr 18, 2016

Equivalence Point

Q. Consider the following titrations.      I.   100 mL of 0.100 M acetic acid titrated with 0.100 M NaOH      II.  100 mL of 0.100 M acetic acid tit...

Solved • Apr 1, 2016

Equivalence Point

Q. When a strong acid is titrated with a strong base, the pH at the equivalence point  a) is equal to 7.0 b) is greater than 7.0 c) is less than 7....

Solved • Mar 29, 2016

Equivalence Point

Q. Formic acid, Ka = 1.8x10 –4, is the principle component in the venom in stinging ants. What is the molarity of a formic acid solution if 25.00mL of...

Solved • Mar 16, 2016

Equivalence Point

Q. If an equal number of moles of weak acid and strong base are added to 1.00L of water, which of the following is true? The resulting solution is ...

Solved • Mar 16, 2016

Equivalence Point

Q. A chemistry student weighs out 0.0899 g of acetic acid, HC 2H3O2 into a 250 mL volumetric flask and dilutes to the mark with distilled water. He pl...

Solved • Feb 24, 2016

Equivalence Point

Q. How would one characterize the solution in a flask, at the equivalence point, for an experiment where 60.0mL of 0.40 M trimethylamine, (CH 3)3N (in...

Solved • Feb 23, 2016

Equivalence Point

Q. The question below pertains to a titration where 0.30 M HNO 3 (in a buret) is added to 60.0mL of 0.40 M trimethylamine, (CH 3)3N (in the flask).How...

Solved • Feb 23, 2016

Equivalence Point

Q. For a titration where 0.30 M HNO3 is added to 60.0 mL of 0.40 M trimethylamine, (CH3)3N (in the flask), determine how many mL's of the HNO3 solutio...

Solved • Feb 23, 2016

Equivalence Point

Q. In a titration a student used 16.60 mL of 0.100 M NaOH to titrate a 0.2000-g sample of an unknown acid. Which of the following acids would the unkn...

Solved • Feb 21, 2016

Equivalence Point

Q. A 25.0 L solution is made of 0.10 M acid and 0.13 M conjugate base. What mass of HNO3 (MM = 63.01) in grams can the buffer absorb before one of the...

Solved • Feb 21, 2016

Equivalence Point

Q. Consider the titration of 50.0 mL of 0.125 M H  3PO4 with 0.160 M Ba(NH2)2. How many milliliters of the 0.160 M Ba(NH2)2 are needed to reach the eq...

Solved • Feb 21, 2016

Equivalence Point

Q. Consider the titration of 60.0 mL of 0.200 M H 2SO4 solution with 0.150 M of KOH. How many milliliters of KOH are needed to reach the equivalence p...

Solved • Feb 21, 2016

Equivalence Point

Q. When a 0.25 M H 3PO4 solution reacts with 10.0 mL of a 0.30 M BaH 2 solution the pH at the equivalence point will be:a) Less than 7.b) More than 7....

Solved • Feb 21, 2016

Equivalence Point

Q. When a 0.25 M HIO3 solution reacts with 10.0 mL of a 0.30 M K 2O solution the pH at the equivalence point will be:a) Less than 7.b) More than 7.c) ...

Solved • Feb 21, 2016

Equivalence Point

Q. When a 0.25 M HCl solution reacts with 10.0 mL of a 0.30 M C  6H5NH2 solution the pH at the equivalence point will be:a) Less than 7.b) More than 7...

Solved • Feb 21, 2016

Equivalence Point

Q. Consider the given graph. If the given graph shows the titration of 23.00 mL of an HNO3 solution of an unknown concentration with a 0.135 M LiOH so...

Solved • Feb 21, 2016

Equivalence Point

Q. In a strong base with weak acid titration, which of the following is correct? A. the equivalence point is greater than 7 because only the conjugat...

Solved • Feb 21, 2016

Equivalence Point

Q. Consider a titration performed using acetic acid and aqueous ammonia. Which of the following statements is correct?    

Solved • Feb 2, 2016

Equivalence Point

Q. Consider the titration of a strong acid with a weak base. Which of the following statements is incorrect?  

Solved • Feb 2, 2016