Thermodynamics ...

For an ideal gas, the heat of reaction at constant pressure and constant volume are related as

Consider the reaction, N₂ + 3H₂ → 2NH₃ carried out at constant temperature and pressure. If ∆H and ∆U are the enthalpy and internal energy changes for the reaction, which of the following expressions is true?

The enthalpies of combustion of carbon and carbon monoxide are -393.5 and- 283 kJ mol^-1 respectively. The enthalpy of formation of carbon monoxide per mole is

Calculate enthalpy for formation of ethylene from the following data

(∆H - ∆U) for the formation of carbon monoxide (CO) from its elements at 298 K is (R = 8.314 JK^-1 mol^-1 )

If heat of neutralisation of HCN with NaOH is -12.1 kJ and the heat of neutralisation of HCl by NaOH is -55.9 kJ/mol, then the energy of dissociation of HCN is

Heat of formation of SO₂ is - 298kJ. What is the heat of combustion of 4 g of S ?

The heats of combustion of carbon monoxide at constant pressure and at constant volume at 27° C will differ from one another by

For the reaction, A (g)+ 2B (g) → 2C (g)+ 3D (g) the change of enthalpy at 27° C is 19 kcal. The value of ∆E is

In an isochoric process, ∆H for a system is equal to