Answer the following questions with respect to I law of thermodynamics. (i) State the law (ii) Give its mathematical expression (iii) List out its limitations

Answer the following questions with respect to I law of thermodynamics

1.	Answer the following questions with respect to I law of thermodynamics. (i) State the law (ii) Give its mathematical expression (iii) List out its limitations
Answer» Solution :Statement : ENERGY can by converted from one from to another , but cannot be created or by destroyed. (ii) Mathematical Extra : `DeltaE=Q-w,DeltaE-`Internal energy change of the systemw - amount of work , q - amount of heat. (III) Limitations of law : It provides on information REGARDING the feasibility of such transformation . No information regarding the direction in which a process will take place. ( SPONTANEOUS or non- spontaneous) .