Question 1
Consider the reaction Pb(s) + 2H
+(aq) → Pb
2+(aq) + H
2(g). If the hydrogen gas pressure is maintained at 1.00 atm and the lead(II) ion concentration is 0.025 M, find the pH at which this reaction is at equilibrium.
◦ 2.8
◦ 3.2
◦ 6.0
◦ 3.0
◦ 5.7
Question 2
Determine the cell diagram for the reaction below. Assume platinum electrodes are used when no other solid is present.
Cl
2(g) + Sn
2+(aq) → Sn
4+(aq) + 2Cl
-(aq)
◦ Pt(s) | Cl
2(g) | Cl
-(aq) || Sn
2+(aq), Sn
4+(aq) | Pt(s)
◦ Pt(s) | Sn
2+(aq), Sn
4+(aq) || Cl
2(g) | Cl
-(aq) | Pt(s)
◦ Pt(s) | Sn
4+(aq), Sn
2+(aq) || Cl
-(aq) | Cl
2(g) | Pt(s)
◦ Pt(s) | Cl
-(g) | Cl
2(aq) || Sn
4+(aq), Sn
2+(aq) | Pt(s)
◦ Pt(s) | Cl
2(g) | Sn
2+(aq) || Sn
4+(aq), Cl
-(aq) | Pt(s)