The enthalpy change in a process is the same, whether the process is carried out in a singly step or in several steps: Identify the law stated here.

The enthalpy change in a process is the same, whether the process is carried out in a single step or inseveral steps. a) Identify tha law stated here. b) Calculate the enthalpy of formation of CH_4 from the following data : i) C_((s))+O_(2(g))rightarrowCO_(2(g)) DeltaH = -393.7kJ/mol ii) H_(2(g))+frac{1}{2}O_(2(g))rightarrowH_2O_((l)) DeltaH = -285.8kJ/mol iii) CH_(4(g))+2O_(2(g))rightarrowCO_(2(g)) DeltaH =-890.4kJ/mol

Enthalpy change is always negative for which one of the following processes ?

Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out

The spontaneity of a process is expressed in terms of a change in Gibbs energy. How is it related to the enthalpy and entropy of a system?

Downstream processing is the final step in the process of recombinant DNA technology. What do you understand by ‘down stream processing’?