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Henderson Hasselbalch Equation

Q. If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.11, which of the following is TRUE? A) [HCHO2] << [NaCHO2] B) [HCHO2] < [NaCHO2] C) [HCHO2] = [NaCHO2] D) [HCHO2] > [NaCHO2] E) It is not possible to make a buffer of this pH from HCHO2 and NaCHO2.

Solved • Jul 15, 2019

Henderson Hasselbalch Equation

Q. Calculate the pOH of a solution that results from mixing 29 mL of 0.13 M ethylamine (C2H5NH2) with 23 mL of 0.11 M C2H5NH3Cl. The Kb value for C2H5NH2 is 6.5 x 10^-4.

Solved • Jul 8, 2019

Henderson Hasselbalch Equation

Q. A buffer consists of 0.35 M H2CO3 and 0.47 M KHCO3. Given that the K values for H2CO3 are, Ka1 = 4.5 x 10^-7 and Ka2 = 4.7 x 10^-11, calculate the pH for this buffer.

Solved • Jul 8, 2019

Henderson Hasselbalch Equation

Q. Calculate the pH of a solution that is 0.251 M HClO and 0.338 KClO. Ka of HClO is 3.0 x 10^-8.

Solved • Jul 8, 2019

Henderson Hasselbalch Equation

Q. I have some acetic acid that dissociates in water. [CH3COOH] = 0.405 M and [CH3­COO-]=0.505 M. Ka=1.8x10-5 . Find the pH=? (3 sig fig) Assume x is too small <<

Solved • Jul 2, 2019

Henderson Hasselbalch Equation

Q. Derive the Henderson Hasselbalch equation pH=pKa + log[base]/[acid]

Solved • Jun 24, 2019

Henderson Hasselbalch Equation

Q. Acetic acid has a pKa of 4.75. What is the pH of 10 mL 1.0 M solution

Solved • Jun 12, 2019