The hydrogen ion concentration of a `10^(-8) M HCl` aqueous soultion at `298 K(K_(w)=10^(-14))` is

Options

A. `1.0 × 10^(–6) M`
B. `1.0525 × 10^(–7) M`
C. `9.525 × 10^(–8) M`
D. `1.0 × 10^(–8) M`

Answer

B

Explanation

`[H^(+)]=10^(-8)+10^(-7) M`
`=10^(-7)[0.1+1]M`
`=1.1xx10^(-7)M`
` = 1.1xx10^(-7)M`
`~=1.0525xx10^(-7)M`