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The molar heat capacity of water at cons...

The molar heat capacity of water at constant pressure `P` , is `75JK^(-1)mol^(-1)` . When `1.0KJ` of heat is supplied to `100g` of water which is free to expand, the increase in temperature of water is

A

`1.2K`

B

`2.4K`

C

`4.8K`

D

`6.6K`

Text Solution

Verified by Experts

The correct Answer is:
B
`C=(q)/(m(T_(2)-T_(1)))`
Given that `C=75JK^(-1)mol^(-1)` ,
`Q=1.0KJ=1000J`
`75=(1000)/(5.55xxDeltaT)(m=(1000)/(18)=5.55)`
`:. DeltaT=(1000)/(5.55xx75)=2.4K`
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