First slide

Questions based on phase change

Question

1 g of ice at 0°C is converted into steam at 100°C. The amount of heat required to do so is:

Difficult

A

80 cal
B

536 cal
C

616 cal
D

0.716 kcal

Solution

${ice}_{0^{o} C}^{1 g} \underset{80 cal}{\to} {water}_{0^{o} C}^{1 g} \underset{100 cal}{\to} {water}_{100^{o} C}^{1 g} \underset{540 cal}{\to} {steam}_{100^{o} C}^{1 g}$

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