Chemistry Homework Help

Browse Homework Solutions

176 solutions

Weak Acid Strong Base Titrations

Q. The following drawings (Figure 1) represent solutions at various stages of the titration os a weak acid., HA, with NaOH. (The Na^+ ions and water molecules have been omitted for clarity.) To which of the following regions of the titration curve does each drawing correspond. (iii) a) before addition of NaOH b) after addition of NaOH but before equivalence point c) at equivalence point d) after equivalence point

Solved • Feb 27, 2020

Weak Acid Strong Base Titrations

Q. The following drawings (Figure 1) represent solutions at various stages of the titration os a weak acid., HA, with NaOH. (The Na^+ ions and water molecules have been omitted for clarity.) To which of the following regions of the titration curve does each drawing correspond. (ii) a) before addition of NaOH b) after addition of NaOH but before equivalence point c) at equivalence point d) after equivalence point

Solved • Feb 27, 2020

Weak Acid Strong Base Titrations

Q. The following drawings (Figure 1) represent solutions at various stages of the titration os a weak acid., HA, with NaOH. (The Na^+ ions and water molecules have been omitted for clarity.) To which of the following regions of the titration curve does each drawing correspond. (i) a) before addition of NaOH b) after addition of NaOH but before equivalence point c) at equivalence point d) after equivalence point

Solved • Feb 27, 2020

Weak Acid Strong Base Titrations

Q. What is the pH at the equivalence point in the titration of 10.0 mL of 0.35 M unknown acid HZ with 0.200 NaOH? Ka = 2.4x10^-7 for the unknown acid HZ a) 7.00 b) 9.86 c) 4.14 d) 10.1

Solved • Mar 12, 2020

Weak Acid Strong Base Titrations

Q. Consider the titration of 50.0 mL of 0.0200 M HClO(aq) with 0.100 M NaOH(aq). What is the formula of the main species in the solution after the addition of 10.0 mL of base? a) HClO b) ClO2 c) ClO^- d) NaOH

Solved • Mar 12, 2020

Weak Acid Strong Base Titrations

Q. What is the pH at the half-stoichiometric point for the titration of 0.22 M HNO2(aq) with 0.1 M KOH(aq)? For HNO2, Ka = 4.3x10^4. a) 2.01 b) 3.37 c) 2.31 d) 7.00

Solved • Mar 12, 2020

Weak Acid Strong Base Titrations

Q. For the titration of 50.0 mL of 0.020 M aqueous salicylic acid with 0.020 M KOH (aq), calculate the pH after the addition of 55.0 mL of the base. For salicylic acid, pKa = 2.97. a) 11.26 b) 11.02 c) 7.00 d) 10.98

Solved • Mar 12, 2020