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Topic: Enthalpy of fusion  (Read 1760 times)

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Offline kershaw22

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Enthalpy of fusion
« on: March 14, 2014, 01:59:20 AM »
How much heat is required to convert 5.0 g of ice at
–10.0 ˚C to liquid water at 15.0 ˚C? (Assume heat
capacities are independent of temperature.)

Enthalpy of fusion 6.00 kJ•mol–1
Specific heat capacity of ice 37.8 J•mol–1•˚C–1
Specific heat capacity of water 76.0 J•mol–1•˚C–1

how do you solve this?

Offline sjb

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Re: Enthalpy of fusion
« Reply #1 on: March 14, 2014, 02:51:34 AM »
How much heat is required to convert 5.0 g of ice at
–10.0 ˚C to liquid water at 15.0 ˚C? (Assume heat
capacities are independent of temperature.)

Enthalpy of fusion 6.00 kJ•mol–1
Specific heat capacity of ice 37.8 J•mol–1•˚C–1
Specific heat capacity of water 76.0 J•mol–1•˚C–1

how do you solve this?

What are the stages involved? How much heat does it need to e.g. raise the sample from -10° to its melting point?

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