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## Homework Statement

Find pH of solution A and that of Solution C with the following information below:

Solution A:50ml of 0.100 M solution of weak monoprotic acid HX

Solution B: 0.0500M solution of salt NaX. It has a pH of 10.02

Solution C: made by adding 15.0m; of 0.250 M KOH to solution A

## Homework Equations

Ka for monoprotic acid is 7.2 x 10^-4, Ka=[H+] [anion]. Anion= x

1/2log(Ka)=[H+]

## The Attempt at a Solution

i try to find [H+] which i did was 1/2log(Ka)=

1/2log (7.2 x 10^-4) = 0.0268

or I find the M of [H+] in solution A

and i found 0.005M of HX