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Grade: 11

                        

Calculate enthalpy change for the combustion of cyclopropane at 298K if enthalpy of formation CO2 ,H2O and propane are -393.5,-385.8 and 20.42 kJ/mol respectively.the entgalpy of isomerisation of cyclopropane is -33 kJ/mol

2 years ago

Answers : (1)

Vikas TU
12286 Points
							

n the question the given enthalphies are for CO2 ,water and propane but we need to find the enthalphy of combustion for cyclopropane.But the standard enthalphy of combustion for cyclopropane can be obtained from enthalphy of isomerism so its enthalphy will be 53.42kJ/mol.

So the enthalphy of combustion of the reaction will be (remember to balance the reaction)

2283.58kJ/mol.

 
one year ago
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