Question

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i)State Hess's law of constant heat summation.

ii) Give one point to differentiate the following thermodynamic terms.

Extensive properties and intensive properties.Give one example for each.

Carries 3 Marks

Class 11 CBSE

Answer 1

Answer:

i)Hess law is when a reaction can be proceed in more than one step, the energy change in all the methods will be same

Eg: A---->B---->C and A----->C

Delta H will be the same in both the reaction

ii) Intensive Properties: Such Properties which depends on quality rather then quantity. Eg: Temperature, Density etc

Extensive Properties: Such Properties which depends on quantity rather than quality. Eg: Mass, Volume

Hope it'll Help