If `H_(3)O^(+)` ion concentration of a solution is increased by 10 times , its pH will

Options

A. Increase by `1`
B. Remains unchanged
C. Decreases by `1`
D. Increase by `10`

Answer

C

Explanation

Let the initial concentration of `H^(o+) = 10^(-1)M`
`pH = 1`
The new concnetration of `H^(o+)`, is `10` times the initial concentration of `H^(o+) = 10 xx 10^(-1) M = 10^(@) = 1 pH_(2) =- log(1) = 0`
The change in `pH = pH_(1) - pH_(2) = 1.0 = 0`
Change in `pH` is one and it decreases from `1` to zero.