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stiv31 [10]
4 years ago
13

The standard cell potential (E°) of a voltaic cell constructed using the cell reaction below is 0.76 V: Zn (s) + 2H+ (aq) → Zn2+

(aq) + H2 (g) With PH2 = 1.0 atm and [Zn2+] = 1.0 M, the cell potential is 0.53 V. The concentration of H+ in the cathode compartment is ________ M.
Chemistry
1 answer:
barxatty [35]4 years ago
6 0

Answer:

[H⁺] = 1.30X10⁻⁴ M

Explanation:

the problem will be solved by using Nernst's equation, which is :

E_{cell}=E^{0}_{cell}- \frac{0.0592}{n}logQ

In the given equation

n = 2

Q = =\frac{[Zn^{+2}][p_{H2}]}{[H^{+}]^{2}}

Putting values

0.53= 0.76 - \frac{0.0592}{n}log(\frac{1X1}{[H^{+}]^{2}})

on calculating

[H⁺] = 1.30X10⁻⁴ M

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Read 2 more answers
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