A solution has `pH=5`, it is diluted `100` times, then it will become

Options

A. neutral
B. basic
C. unaffected
D. more acidic

Answer

A

Explanation

`pH=5` means `[H^(+)]=10^(-5)M`.
After dilution `[H^(+)]=10^(-5)//100=10^(-7)M`
`[H^(+)]` from `H_(2)O` cannot be neglected.
Total `[H^(+)]=10^(-7)+10^(-7)=2xx10^(-7)`
`pH=7-0.3010=6.6990=7` (neutral)