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  3. 1) consider the reaction: a (aq) ⇌ b (aq)

1) Consider the reaction: A (aq) ⇌ B (aq) at 253 K where the initial concentration of A...

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Chemistry

1) Consider thereaction:


A (aq) ⇌ B (aq)

at 253 K where the initial concentration of A = 1.00 M and theinitial concentration of B = 0.000 M. At equilibrium it is foundthat the concentration of B = 0.523 M. What is the maximum amountof work that can be done by this system when the concentration of A= 0.859 M?

2) Consider the following reaction at 257 K:

2 A (aq) + 1 B (aq) → 2 C (aq) + 2 D (aq)

An experiment was performed with the following intitialconcentrations: [A]i = 1.37 M, [B]i = 2.19 M,[C]i = 0.47 M, [D]i = 0.31 M. The reactionwas allowed to proceed until equilibrium was reached at which timeit was determined that [A] = 0.57 M. What isΔGnonstandard at the initial conditions? (I got -14.16kJ but it said i waswrong)

3) Consider the cell described below at 287 K:

Sn | Sn2+ (1.27 M) || Pb2+ (2.49 M) |Pb

Given EoPb2+ + 2e-→Pb = -0.131 V andEoSn2+ + 2 e-→Sn =-0.143 V. What will the concentration of the Pb2+solution be when the cell is dead?

4)A concentration cell is built based on the reaction:

2 H+ + 2 e- → H2

The pH in one of the half cells is -0.03743, while the pH in theother is 2.804. If the temperature of the overall cell is 296 K,what is the potential? (Faraday's constant is 96,485 C/mole-)

Answer & Explanation Solved by verified expert
4.0 Ratings (563 Votes)
3 Sn Sn2 127 M Pb2 249 M Pb Pb2 2 ePb 0131 V reduction Sn2 2 eSn 0143 V oxidation net reaction Pb2 Sn Pb Sn2 the concentration of the Pb2    See Answer
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