a) Why do the symbols for heat capacity have suffixes? b) CV is different from CP....

a) Why do the symbols for heat capacity have suffixes?
b) CV is different from CP. Which is larger and why?
c) Why is the difference between CV and CP often neglected for solids?

Solutions

Expert Solution

A.) Heat capacity is denoted by C only.. c comes from capacity... Now for Cv , it denotes heat capacity of gases at constant volume . Here V denotes volume which is constant throughout the process.

Similarly , Cp is heat capacity of gases at constant pressure. P comes from pressure . In physics/chemistry we use suffix denotation for easy to understand.

B.) Cp is greater than Cv because Cp = R+Cv . Here R is gas constant that is equals to 8.314 J/mol.k.

C.) The heat capacity of gas at constant pressure Cp is greater than the heat capacity at constant volume Cv , because when heat is added at constant pressure, the substance expands and work is done.

genius_generous answered 1 year ago

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