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Given pH of a solution A is 3 and it is ...

Given pH of a solution A is 3 and it is mixed with another solution B having pH 2. If both mixed then resultant pH of the solution will be

A

`3.2`

B

`1.9`

C

`3.4`

D

`3.5`

Text Solution

Verified by Experts

The correct Answer is:
B
pH of the solution A = 3
`[H^(+)]_(A) = 10^(-3)M `
pH of the solution B = 2
`[H^(+)]_(B) = 10^(-2)M `
`[H^(+)] = 10^(-3)+10^(-2) = 10^(-3) +10 xx 10^(-3) = 11 xx 10^(-3)`
pH = -log (11xx10^(-3))=3-log 11 `
`= 3 - 1.04 = 1.95`
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