How much heat is released when 75.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol,the enthalpy of fusion for water is 6.01 kJ/mol,the molar heat capacity of liquid water is 75.4 J/(mol ∙ °C),and the molar heat capacity of ice is 36.4 J/(mol ∙ °C).
A)54.8 kJ
B)195 kJ
C)228 kJ
D)248 kJ

Question

Quizplus · Accepted Answer

To find the total heat released, calculate the heat for each phase change and temperature change: 1) Condense steam to water at 100°C, 2) Cool water from 100°C to 0°C, 3) Freeze water to ice at 0°C, 4) Cool ice from 0°C to -15°C. Sum these values to get the total heat released.

How Much Heat Is Released When 75