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The values of DeltaH and DeltaS for the ...

The values of `DeltaH` and `DeltaS` for the reaction,
`C_("graphite")+CO_(2)(g)rarr2CO(g)`
are `170KJ` and `170JK^(-1)` respectively. This reaction will be spontaneous at

A

510 K

B

710 K

C

910 K

D

1110 K

Text Solution

Verified by Experts

The correct Answer is:
D
For spontaneous process `Delta G` must be negative so, according to Gibb's energy equation
`Delta H-T. Delta S lt 0`
`Delta H lt T Delta S`
`T gt (Delta H)/(Delta S)`
`therefore T gt (170xx1000J)/(170 JK^(-1))rArr T gt 1000 K`
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