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The molar heat capacities at constant pr...

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

A

`DeltaH_(300)gtDeltaH_(310)`

B

`DeltaH_(300)ltDeltaH_(310)`

C

`DeltaH_(300)=DeltaH_(310)`

D

if `T_(2)gtT_(1)" then "DeltaH_(310)gtDeltaH_(300)" and if "T_(2)ltT_(1)" then "DeltaH_(310)ltDeltaH_(300)`

Text Solution

Verified by Experts

The correct Answer is:
C
`becauseDelta_(r)C_(p)=0," "thereforeDeltaH_(300)=DeltaH_(310)`
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