The specific heat of gold is 0.129 J/g·°C.What is the molar heat capacity of gold?
A)0.039 J/mol·°C
B)0.129 J/mol·°C
C)25.4 J/mol·°C
D)39.0 kJ/mol·°C
E)197 J/mol·°C

Question

Quizplus · Accepted Answer

The molar heat capacity (Cp) is defined as the amount of heat required to raise the temperature of one mole of a substance by 1 degree Celsius. It can be calculated as follows:

Cp = specific heat x molar mass

The molar mass of gold is 196.97 g/mol. Substituting the value of specific heat (0.129 J/g·°C) and molar mass into the formula gives:

Cp = 0.129 J/g·°C x 196.97 g/mol = 25.4 J/mol·°C

Therefore, the best choice is (C) 25.4 J/mol·°C.

The Specific Heat of Gold Is 0