Two parts: as follows: 2 Cu(s) + CI2(aq) rightarrow 2 CuCI(s) Write balanced equ

Question

Two parts: as follows:

2 Cu(s) + CI2(aq) rightarrow 2 CuCI(s) Write balanced equations for the half-reactions in this redox reaction. Include the phases of all species in the chemical equations. Tip: Plus signs (+) can be typed from the keyboard. Include phases in the balanced chemical equation. Click on the (aq) button in the tools to select the phase to add. Phases should not be subscripted. If you want to reset an answer module to its original form, click on the module that you want to reset, and press the restore button. The restore button is the icon with two red arrows and is located below and to the right of the module. Calculate and for the reaction. for Cu+(aq) is 0.521 V. for Cl2(g) is 1.3583 V.

Explanation / Answer

a) reduction half cell 2Cu(s) ---> 2 Cu+(aq) + 2e-(aq)

oxidation half cell Cl2 (g) + 2e-(aq) -------> 2Cl-(aq)

b) E0 rxn = Eo( Cl2/2Cl-) -Eo( Cu+/Cu) = 1.3583 - 0.521 = 0.8373 V

dGo = -nFE = - 2 x 96485 x 0.8373 = - 161574 J = -161.574 KJ

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