A certain weak acid, HA, has a Ka value of 7.8×10−7. Part A Calculate the percent...

Question

Question

A certain weak acid, HA, has a Ka value of 7.8×10−7.

Part A

Calculate the percent ionization of HA in a 0.10 M solution.

Express your answer as a percent using two significant figures.

PART B

Calculate the percent ionization of HA in a 0.010 M solution.

Express your answer as a percent using two significant figures.

ANSWER BOTH PARTS

Answer 1

Answer #1

H* + HA Z c o c(-a) A o ca starting at eam ca ka= clican co? clona) (A) X= (7.8 x10?)2 = 0.0028 = 0.28% (8) a= (7-8x1017) 3 =

Answer 2

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