Question

The number of moles of H+ ions in a liter of distilled (pure) water is:

1 x 10-7
1 x 10-14
0.5 x 10-7
2 x 10-14
none of these

Answer 1

At room temperature, number of moles of distilled water is 1 x10^-7. Hope it cleared your doubt.

Answer 2

Answer : The correct option is,
`1* 10^(-7)`

Explanation :

As we know that the ionic product of water is the product of the concentration of hydrogen ion and the concentration of the hydroxide ion.

In the pure water, the concentration of hydrogen ion and the concentration of the hydroxide ion are equal.

Mathematically,

`[H^+][OH^-]=1* 10^(-14)mole/L`

When
`[H^+]=[OH^-]`

`[H^+]^2=1* 10^(-14)mole/L`

`[H^+]=1* 10^(-7)mole/L`

Therefore, the number of moles of
`[H^+]` ions in a liter of distilled pure water is,
`1* 10^(-7)`