Question

For each of the following reactions choose the expression that represents Kc for the reaction:

1) TlCl3(s) \rightleftharpoons TlCl(s) + Cl2(g)

a) Kc = [TlCl3]/[TlCl][Cl2]

b) Kc = [TlCl][Cl2]/[TlCl3]

c) Kc = [Cl2]

2) CuCl42-(aq) \rightleftharpoons Cu2+(aq) + 4Cl-(aq)

a) Kc = [Cu2+][Cl-]4/[CuCl42-]

b) Kc = [Cu2+][Cl-]/[CuCl42-]

c) Kc = [CuCl42-]/[Cu2+][Cl-]

3) 3O2(g) \rightleftharpoons 2O3(g)

a) Kc = [O2]3/[O3]2

b) Kc = [O3]3/[O2]2

c) Kc = [O3]2/[O2]3

4) 4H3O+(aq) + 2Cl-(aq) + MnO2(s) \rightleftharpoons Mn2+(aq) + 6H2O() + Cl2(aq)

a) Kc = [Mn2+][Cl2]/[H3O+]4[Cl-]2

b) Kc = [Mn2+][H2O]6[Cl2]/[H3O+]4[Cl-]2[MnO2]

c) Kc = [Mn2+][H2O][Cl2]/[H3O+][Cl-]2[MnO2]

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Answer #1

For a general reaction, a e + bB - cC + dD Kc = [c] e [o [A]a[B] for solids and liquids, concentration is 1. B 00 TIC13 (5)

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