Chemistry-
General
Easy
Question
Given that 
at 298 K. The pressure of H2(g) would be –
- 10–7 bar
- 10–10 bar
- 10–12 bar
- 10–14 bar
The correct answer is: 10–14 bar
The cell reaction is : 2H+ + 2e 
H2
Ecell = Eºcell – log
Eºcell = 0, Ecell = 0
\ = [H+]2
In pure water, [H+] = 10–7 (M)
\ = 10–14 bar.
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