Question

In neutral water at 25 degree celsius, (H+) in mol/l is
(a)10^7 (c)10^-7
(b)10.7 (d)1.0

Answer 1

Hello Dear,

◆ Answer -

(c) 10^-7 mol/L

● Explanation -

Concentration of hydrogen ions in pure water at NTP is 10^-7 M.

You can verify this from its pH.

pH = -log[H+]

As we know, pH of pure water is taken arbitrary as 7 -

7 = -log[H+]

log[H+] = -7

Taking antilog,

[H+] = 10^-7 M

Hope this helps you. Thanks for asking...