It takes 330 j of energy to raise the temperature of 14.6 g of benzene from 21.0 °c to 28.7 °c at constant pressure. what is the constant-pressure molar heat capacity of benzene?

The mathematical expression for heat capacity at constant pressure is given as:

  (1)

where, Q = heat capacity

=  molar heat capacity at constant pressure

= change in temperature

n = number of moles

Therefore, =

=

Number of moles  =

=

= 0.186 mole

Put the values in formula (1)

(conversion of degree Celsius into kelvin)

=

= 6.32 J /mol K

Hence, molar heat capacity of benzene at constant pressure  =

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