MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryThermodynamics and ThermochemistryPrevious Year Questions
The molar heat capacity of water at constant pressure, C, is 75J K-1. When 1.0 kJ of heat is supplied to 100 g of water which is free to expand, the increase in temperature of water is. (2003)
A.1.2K
B.2.4K✓ Correct
C.4.8K
D.6.6K
Explanation
Molar heat capacity 1 1 75JK mol 18 g of water = 1 mole = 75 1 1 JK mol 1 g of water 1 75 JK 18 100 g of water 1 75 100JK 18 x Q m C T x x or 75 1000 100 T 18 x x 10 18 T 2.4K 75 x >>
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