Question

11. When equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed, calculate the hydroxide ion concentration and pH of solution

A)Conc=0.045M and pH=7
B)Conc= 0.9 M and pH=12.65
C)Conc= 0.9 M and pH = 7
D)Conc= 0.045 M and pH=12.65

Answer 1

Answer:

When equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed, the hydroxide ion concentration is

2

0.1−0.01

=0.045M

The pOH of the solution is pOH=−log [OH

−

]=−log 0.045=1.35

The pH of the solution is pH=14−pOH=14−1.35=12.65

Explanation:

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