I.P. of sodium is 513 KJ `mol^(-1)`. What is value in eV `"molecule"^(-1)`.

A reaction is at equilibrium at 100^(@)C and the enthalpy change for the reaction is "42.6 kJ mol"^(-1) . What will be the value of DeltaS in "J K"^(-1)"mol"^(-1) ?

The heat of atomization of a compound XY_(3) in gaseous state is E kJ mol^(-1) what is the X-Y bond energy of kJ mol^(-1) unit?

DeltaE^(@) of combustion of isobutylene is -X kJ mol^(-1) . The value of DeltaH^(@) is

DeltaU^(-) of combustion of methane is -x kJ mol^(-1) . The value of DeltaH^(-) is:

The heat of formation of crystalline sodium chloride is -410 kJ mol^(-1) . The heat of sublimation of sodium metal is 108.8 kJ mol^(-1) . The heat of dissociation of chlorine gas into atoms is 242.7 kJ mol^(-1) . The ionisation energy of Na and electron affinity of Cl are 493. 7 kJ and -368.2 kJ respectively. Calculate the lattice energy of NaCl .

The ionization energy of sodium is 495 kJ mol^(-1) . How much energy is needed to convert atoms persent in 2.3 mg of sodium into sodium ions :

If the activation enery for the forward reaction is 150 "kJ mol"^(-1) and that of the reverse reaction is 260 "kJ mol"^(-1) . What is the ethalpy change for the reaction ?