Br2( l )+2Cl( a q )2Br( a q )+Cl2( g ) Express your answer using two significant

Question

Br2(l)+2Cl(aq)2Br(aq)+Cl2(g)

Express your answer using two significant figures.

Constants Periodic Table Part A Calculate the equilibrium constant for each of the reactions at 25 C Standard Electrode Potentials at 25 °C Br2(1) + 2 Cl-(aq) 2 Br (aq) + Cl2(g) E° (V) 0.13 0.76 1.09 1.36 1.21 0.16 Reduction Half-Reaction Express your answer using two significant figures Pb2 (a)2ePb(s) Zn2+ (aq) + 2 e- Zn(s) Br2(1) + 2 e--> 2 Br(aq) Cl2(g) + 2 e 2C1-(aq) MnO2(s) + 4 H+ (aq) + 2 e- Mn2+ (aq) + 2 H2O(1) Cu2+ (aq) + 2 e- Cu(s) SubmitP Previous Answers Request Answer X Incorrect Try Again; 2 attempts remaining Provide Feedback Next>

Explanation / Answer

Br2 (l) + 2 Cl- (aq)   ------------> 2 Br- (aq) +   Cl2 (g)

Eocell = Eored - Eooxidation

          = 1.09 - 1.36

          = - 0.27 V

delta Go = - n F Eocell

               = - 2 x 96485 x - 0.27

               = 52.1 kJ

delta GO = - R T ln K

52.1 = - 8.314 x 10^-3 x 298 x ln K

K = 7.4 x 10^-10

K = 7.4 x 10^-10

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