The specific heat capacity of water is 4.18 J g⁻¹ K⁻¹. What is its molar heat capacity (H₂O = 18 g mol⁻¹)?
Correct answer A. 75.2 J mol⁻¹ K⁻¹
Explanation
Molar heat capacity is the heat needed to warm one mole by 1 K, so it equals specific heat capacity × molar mass = 4.18 × 18 = 75.2 J mol⁻¹ K⁻¹.
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