Question

1.) Calculate the molarities of the buffer species: You have 170.0 mL of an acetic acid and conjugate base buffer. The total moles of the buffer equals 0.100M, the pH is 5.00. The ka(acetic acid) is 1.8 x 10 -5. Show the buffer equilibrium rxn; show all calcs and steps for credit.

2.) How would you make a buffer given the following:

A bottle of solid sodium acetate, a stock bottle of 6.0M acetic acid, water and lab equipment is available;

Buffer needed: 500mL; pH = 4.60 ka = 1.8 x 10-5 ; the total moles of buffer: 0.200 moles

Answer 1

4-7y 109 Dol-A 0.21 M 28 1つl) loa 0-2 スニー0-14 aud 6-2 1-38 2-38