A- Consider the following reaction at 298K. I 2 (s) + Pb (s) = 2 I - (aq) + Pb 2

Question

A-

Consider the following reaction at 298K.
I2 (s) + Pb (s) = 2 I- (aq) + Pb2+ (aq)

Which of the following statements are correct?

Choose all that apply.

Go > 0

The reaction is product-favored.

K < 1

Eocell > 0

n = 2 mol electrons

B-

Consider the following reaction at 298K.
Co2+ (aq) + Pb (s) = Co (s) + Pb2+ (aq)

Which of the following statements are correct?

Choose all that apply.

n = 5 mol electrons

delta Go < 0

The reaction is reactant-favored.

Eocell < 0

K > 1

C-

Consider the following reaction at 298K.
2 Fe3+ (aq) + Pb (s) = 2 Fe2+ (aq) + Pb2+ (aq)

Which of the following statements are correct?

Choose all that apply.

delta Go < 0

Eocell < 0

n = 4 mol electrons

The reaction is reactant-favored.

K > 1

Explanation / Answer

A) Choose all that apply.

Go > 0 - For reaction product favour, it should be negative, ie, Go < 0

The reaction is product-favored.   

K < 1 - K should be +ve for producr favour

Eocell > 0 - Right ( Eo Cell will be positive )

n = 2 mol electrons - Correct, reaction involve 2 moles of electrons

B)

n = 5 mol electrons - NO 2 MOLE OF ELECTRONS

delta Go < 0 - YES RIGHT. FOR PRODUCT FAVOURED REACTION Go < 0

The reaction is reactant-favored.

Eocell < 0 NO Ecell WILL BE GREATER THAN 0

K > 1 CORRECT - K WOULD BE GREATER THAN 1

C)

delta Go < 0 - CORRECT

Eocell < 0 - NO FOR SPONTANEOUS REACTION Eo Cell WILL BE GREATER THAN 0

n = 4 mol electrons - NO

The reaction is reactant-favored. - NO

K > 1 - CORRECT

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