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For the reaction 2Ag(2)O(s) rarr 4Ag(s) ...

For the reaction `2Ag_(2)O(s) rarr 4Ag(s) + O_(2)(g), DeltaH ` is 61.17 `KJ"mol"^(-1)` and `DeltaS` is 132 `JK^(-1) "mol"^(-1)` . Compute the temperature above which the given reaction will be spontaneous.

A

`T gt 463.4 K`

B

`T gt 190.25^(@) C`

C

`T lt 190.25^(@) C`

D

`T lt 463.4 K`

Text Solution

Verified by Experts

The correct Answer is:
A, B
The given reaction will be spontaneous when `DeltaG` would be negative when `DeltaH-TDeltaS` is negative . That is ,
`DeltaH-TDeltaS lt 0`
or `TDeltaS gt DeltaH`
or `T gt (DeltaH)/(DeltaS)`
or `T gt (61170 J "mol"^(-1))/(132 JK^(-1) "mol"^(-1))`
or `T gt 463.4 K`
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