Two kilograms of liquid n-hexane [Cp = 2.5 kJ/(kg·°C)] and 1 kg of liquid cyclohexane [Cp...
Two kilograms of liquid n-hexane [Cp = 2.5 kJ/(kg·°C)] and 1 kg of liquid cyclohexane [Cp = 1.8 kJ/(kg·°C)] are mixed and heated from 10°C to 40°C. What is H?
Homework Answers
Given Data:
Amount of liquid n-hexane taken = 2kg
Amound of liquid cyclohexane taken =1kg
specific heat capacity of n-hexane = 2.5 kJ/kg.oc
specific heat capacity of cyclohexane =1.8 kJ/kg.oc
Assume no reaction takes place during mixing.
Therefore, Change in enthalpy = Enthalpy change of n-hexane + Enthalpy change of cyclohexane
= 2*2.5*(40-10) + 1*1.8*(40-10)
= 204 kJ
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