Enthalpy Change

CO%20_%7B2%7D(g)%2B%20H%20_%7B2%7D(g)%20%5Clongrightarrow%20CO%20(g)%2B%20H%20_%7B2%7D%20O%20(g)

%5CDelta%20H_%7Bf%7D%5E%7B%5Ccirc%7D%3D(%5CDelta%20H)_%7B%5Ctext%20%7Bproducts%20%7D%7D-(%5CDelta%20H)_%7B%5Ctext%20%7Breactants%20%7D%7D

Hence,

%5CDelta%20H_%7Bf%7D%7B%20%7D%5E%7B%5Ccirc%7D%3D%5Cleft%5B%5CDelta%20H_%7Bf_%7B%20CO%20%7D%7D%2B%5CDelta%20H_%7Bf_%7B%20H%20_%7B2%7D%20O%20%7D%7D%5Cright%5D-%5Cleft%5B%5CDelta%20H_%7Bf%20CO%20_%7B2%7D%7D%5Cright%5D%20%5Cldots(%20i%20)

Given,

%5CDelta%20H_%7Bf%20CO%20_%7B2%7D(s)%7D%5E%7B%5Ccirc%7D%3D-393.5%20kJ%20mol%20%5E%7B-1%7D

%5CDelta%20H_%7Bf%20CO%20%7D%5E%7B%5Ccirc%7D%3D-110.5%20%5C%2CkJ%20mol%20%5E%7B-1%7D

%5CDelta%20H_%7Bf%20H%20_%7B2%7D%20O%20%7D%5E%7B%5Ccirc%7D%3D-241.8%20kJ%20mol%20%5E%7B-1%7D

Put there value in equation

%5CDelta%20H_%7Bf%5E%7B%5Ccirc%7D%7D%3D-110.5-241.8%2B393.5%3D41.2

Chapter Questions
1 MCQs