Calculate the number of kj of heat necessary to raise the temperature – InterviewSolution

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1.

Calculate the number of kj of heat necessary to raise the temperature of 60 g of aluminium from 35°C to 55°C. Molar heat capacity of Al is 24 J mol-1 K-1.

Answer»

From the expression of heat (q),

WHER,
c= MOLAR heat capacity
m= mass of substance

= CHANGE in temperature
Substituting the values in the expression of q:

q=1066.7J
q=1.07 kJ

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