A buffer is made by adding 0.12 mol NH4Cl and 0.15 mol NH3 to enough water to make 0.250 L of solution. (Ka NH4+/NH3= 5.6 x10â10)

a) Calculate the pH of the buffer solution

b) What is the pH after the addition of 10.00 mL of 0.1 M NaOH to 90.00 mL of this buffer solution? Compare to pH in part a.

c) What is the pH of a solution made by adding 10.00 mL of 0.1 M NaOH to 90.00 mL of pure water? Compare to pH in part b.

Question

A buffer is made by adding 0.12 mol NH4Cl and 0.15 mol NH3 to enough water to make 0.250 L of solution. (Ka NH4+/NH3= 5.6 x10â10)

a) Calculate the pH of the buffer solution

b) What is the pH after the addition of 10.00 mL of 0.1 M NaOH to 90.00 mL of this buffer solution? Compare to pH in part a.

c) What is the pH of a solution made by adding 10.00 mL of 0.1 M NaOH to 90.00 mL of pure water? Compare to pH in part b.

Unlock all answers