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The enthalpy and entropy of a reaction a...

The enthalpy and entropy of a reaction are `- 5.0 kJ mol^(-1) and -20 JK^(-1) mol^(-1)` respectively and independent of tempareture. The highest temperature upto which the reaction is feasible is :

A

250 K

B

260 K

C

275 K

D

300 K

Text Solution

Verified by Experts

The correct Answer is:
A
Both `Delta H and Delta S` are negative and therefore, the reaction will be spontaneous `(Delta G lt O)` if
`Delta H - T Delta S lt 0`
`- 5.0 xx 10^(3) - T (- 20 JK^(-1)) lt 0`
or `T lt (5 xx 10^(3))/(20)`
or `T lt 250 K`
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