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How much heat is required to change 10g ...

How much heat is required to change `10g` ice at `0^(@)C` to steam at `100^(@)C`? Latent heat of fusion and vaporisation for `H_(2)O` are `80 cl g^(-1)` and `540 cal g^(-1)`, respectively. Specific heat of water is `1cal g^(-1)`.

A

7290 cal

B

5400 cal

C

7200 cal

D

8100 cal

Text Solution

Verified by Experts

The correct Answer is:
C
Total heat absorbed `= DeltaH_("fusion")+DeltaH_("vap") = 10 XX 80 + 10 xx 1 xx 100 + 10 xx 540 = 7200 cal`.
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