Question

1. Calculate the amount of heat required to con- vert 10 g of ice at 0°C to 10 g of water at 100°C. (Specific heat capacity of water = 1 cal/g/°C) (a) 2000 cal (b) 1800 cal (c) 2200 cal (d) 1600 cal
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Answer 1

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The energy required to convert 10 g ice at 0°C to 10 g of water at 0° C to water at

100°C = 10 x 100 x 1 = 1000 cal

The energy required to convert 10 g water at 0°C to water at

100°C = 10 x 100 x 1 = 1000 cal

Total energy required = 800 + 1000 = 1800 cal

Hence, the correct option is (B).