Calculate the volume of 1 M solution of HCl needed for 1 unit shift of the pH of the following solutions:

a. 100 mL of 0.01 M solution of weak acid (pKa = 6) and 0.05 M of it's sodium salt

b. 0.005 mole of sodium formiate and 23 g of formic acid dissolved in 100 mL of water. (pKa od formic acid = 3.75)

c. 100 mL of 0.1 M ammonia solution.

Answer rating: 100% (QA)

a moles of acid molarity x volume 1000 moles of acid 001 x 100 1000 103 moles of salt 005 x 100100 5 x 103 for acidic buffer pH pKa log salt acid pH 6 ... View the full answer