Chemistry homework of XII

1.Define enthalpy of combustion. Heat of formation of ethyl alcohol, water and carbon dioxide are- 64.1Kcal , -68.5Kcal and -95 Kcal respectively.  Calculate the heat of combustion of ethyl alcohol.
2.Distinguish between exothermic and endothermic reaction
3.Distinguish spontaneous and non spontaneous processes giving an example of each.
4.what are the driving forces for spontaneous processes? Justify with examples.
5.Write the general methods of preparation of chloroethane.
6.Describe the laboratory preparation of ethoxy Ethane.
7.What are the criteria for a substance to be primary Standard?
8.What is normality factor ? Distinguish between end point and equivalence point in titration.
9.Define equivalent weight of an element. How is equivalent weight of an acid calculated ?
 To be submitted on given time