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Equal volume of 2 solution having pH=2, ...

Equal volume of 2 solution having pH=2, pH=10 are mixed together at `90^@`C. The pH of resulting solution is : (Take `K_(w)=10^(-12)` at `90^@` C)

Text Solution

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The correct Answer is:
6
`pH=2 implies [H^(+)]=10^(-2)`
`pH= 10 implies [OH^(-)]=10^(-2)` (at `K_(w)=10^(-12))`
On mixing`H^(+) + OH^(-) to H_(2)O`
`therefore` pH of resulting solution 6.
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