Problem: Calculate the pH of a solution formed by mixing 100.0 mL of 0.100 M NaF and 100.0 mL of 0.060 M HCl. Ka of HF = 7.24 x 10-4.a. 2.96b. 4.68c. 3.32d. 9.26e. 3.14

FREE Expert Solution

We’re being asked to calculate the pH of a  pH of a solution formed by mixing 100.0 mL of 0.100 M NaF and 100.0 mL of 0.060 M HCl.

NaF is a salt and it will break up in the solution:

NaF → Na+(aq) + F-(aq)

F- is a conjugate base and of a weak acid (HF):

      HF     +   H2O(l)    →     F-(aq)    +     H3O+(aq)
(weak acid)                      (conjugate base)

HCl will react with F-:

Reaction:         NaF(aq) + HCl(aq) → HF(aq) + NaCl(aq)


We will calculate the pH of the solution using the following steps:

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Problem Details

Calculate the pH of a solution formed by mixing 100.0 mL of 0.100 M NaF and 100.0 mL of 0.060 M HCl. Ka of HF = 7.24 x 10-4.

a. 2.96
b. 4.68
c. 3.32
d. 9.26
e. 3.14

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