Which of the following is an example of coupled reactions that are likely to be overall...

Which of the following is an example of coupled reactions that are likely to be overall spontaneous as written (select all that apply)? A + B -> C + D ΔG° = -10 kJ mol-1 / E + F -> C ΔG° = 2 kJ mol-1 A + B -> C + D ΔG° = 10 kJ mol-1 / D + E -> F ΔG° = -2 kJ mol-1 A + B -> C + D ΔG° = -10 kJ mol-1 / C + E -> F ΔG° = 2 kJ mol-1 A + B -> C + D ΔG° = -10 kJ mol-1 / A + 2 B -> E ΔG° = 2 kJ mol-1

Solutions

Expert Solution

answer : 1 , 3 ,4

1) A + B -> C + D ΔG° = -10 kJ mol-1 / E + F -> C ΔG° = 2 kJ mol-1 -------- spontaneous.

A + B -> C + D ΔG° = -10 kJ mol-1

E + F -> C ΔG° = 2 kJ mol-1

____________________________

A + B + E + F -----------> 2 C + D , ΔG° = - 8 kJ mol-1

this is spontenous.

3) A + B -> C + D ΔG° = -10 kJ mol-1 / C + E -> F ΔG° = 2 kJ mol-1 ----------- spontaneous

A + B -> C + D ΔG° = -10 kJ mol-1

C + E -> F ΔG° = 2 kJ mol-1

_______________________________

A + B + E ---------> D + F , ΔG° = - 8 kJ mol-1

this is spontenous.

4) A + B -> C + D ΔG° = -10 kJ mol-1 / A + 2 B -> E ΔG° = 2 kJ mol-1 ----------- spontaneous

A + B -> C + D ΔG° = -10 kJ mol-1

A + 2 B -> E ΔG° = 2 kJ mol-1

----___________________________

2 A + 3 B -------------> C + D + E , ΔG° = -8 kJ mol-1

this is spontanous.

queen_honey_blossom answered 1 year ago

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