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The molar heat capacities at constant pr...

The molar heat capacities at constant pressure (assumed constant with respect to temperature) at A, B and C are in ratio of 3:1.5:2.0 The enthalpy change for the exothermic reaction A + 2B `rarr` 3C at 300 K and 310 K is `DeltaH_(300) "and" DeltaH_(310)` respectively then:

A

`DeltaH_(300) gt DeltaH_(310)`

B

`DeltaH_(300) lt DeltaH_(310)`

C

`DeltaH_(300) = DeltaH_(310)`

D

If `T_(2) gt T_(1)` then `DeltaH_(310) gt DeltaH_(300)` and if `T_(2) lt T_(1)` then `DeltaH_(310) lt DeltaH_(300)`

Text Solution

Verified by Experts

The correct Answer is:
C
`(DeltaC_(p))_(nm) =0 , therefore DeltaH_(300) = DeltaH_(310)`
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