Author Question: A cell based on the reaction below has a standard potential of +0.42 V at 25C. If all of the species ... (Read 57 times)

Garrulous · **on:** Feb 15, 2020

Question 1

The following cell has a potential of 0.45 V at 25°C.

Pt(s) ∣ H2(1 atm)|H+(? M) ∣∣ Cl-(1 M) ∣ Hg2Cl2(s)|Hg(l)

The standard half-cell potential for the half-reaction Hg2Cl2(s) + 2 e- → 2 Hg(l) + 2 Cl-(aq) is 0.28 V. What is the pH in the anode compartment?
◦ 4.7
◦ 7.6
◦ 12.3
◦ 2.9

Question 2

A cell based on the reaction below has a standard potential of +0.42 V at 25°C. If all of the species are at standard conditions except [H+], at what pH will the cell have a potential of zero?

H2O2(aq) + 2 H+(aq) + 2 Cl-(aq) → Cl2(aq) + 2 H2O(l)

◦ 14.2
◦ 10.6
◦ 3.55
◦ 7.09

wilsonbho · **Reply #1 on:** Feb 15, 2020

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