Question:

The heat capacity per mole of water is ($R$ is universal gas constant)

Updated On: Jun 8, 2024
  • $ 9R $
  • $ \frac{9}{2}R $
  • $ 6R $
  • $ 5R $
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The Correct Option is A

Solution and Explanation

Molar specific heat of water = molar mass of water $ \times $ specific heat of water $ =\frac{18g}{mol}\times \frac{1\,cal}{{{g}^{o}}C} $ $ =18\frac{cal}{mo{{l}^{o}}C} $ $ =9R $ [where, $ R=2\text{ }cal\text{ }mo{{l}^{-{{2}_{o}}}}\text{ }{{C}^{-1}} $ ]
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