Calculate the mass of solid ammonium chloride required to mix with 100 ml of 1.0m ammonia to prepare a 9.25 ph buffer

Question

Chemistry

Jon Wheeler

5 April, 12:33

Calculate the mass of solid ammonium chloride required to mix with 100 ml of 1.0m ammonia to prepare a 9.25 ph buffer

+5

Answers (1)

Know the Answer?

Richards · Answer 1

Given:

Volume of base = 100 mL

Concentration of base = 1.0 m

pkb of ammonia = 4.75

ph of buffer = 9.25

pOH = pkb + log [salt]/[base]

= 4.75 + log[salt]/[1.0m]

calculate for the pOH.

pH = 14 - pOH