The heat capacity of liquid water at constant pressure, CP is 18 cal deg-1 mol-1 The value of heat capacity of water at constant volume, Cv is approximately

Question

The heat capacity of liquid water at constant pressure, CP is 18 cal deg-1 mol-1 The value of heat capacity of water at constant volume, Cv is approximately (A) 18 cal deg-1 mol-1 (B) 16 cal deg-1 mol-1 (C) 10.8 cal deg-1 mol-1 (D) cannot be predicted

Tardigrade Admin · Accepted Answer

Cp=Cv=2 cal deg-1 mol-1 CV=CP-2 =18-2=16 cal deg-1 mol-1

Q. The heat capacity of liquid water at constant pressure, $C_{P}$ is $18 c a l d e g^{- 1} m o l^{- 1}$ The value of heat capacity of water at constant volume, $C_{v}$ is approximately

$18 c a l d e g^{- 1} m o l^{- 1}$

$16 c a l d e g^{- 1} m o l^{- 1}$

$10.8 c a l d e g^{- 1} m o l^{- 1}$

cannot be predicted

$C_{p} = C_{v} = 2 c a l d e g^{- 1} m o l^{- 1}$
$C_{V} = C_{P} - 2 = 18 - 2 = 16 c a l d e g^{- 1} m o l^{- 1}$

Q. The heat capacity of liquid water at constant pressure, CP​ is 18caldeg−1mol−1 The value of heat capacity of water at constant volume, Cv​ is approximately

18caldeg−1mol−1

16caldeg−1mol−1

10.8caldeg−1mol−1