In the gaseous phase reaction
`C_(2)H_(4) +H_(2) hArr C_(2)H_(6),` the equilibrium constant can be expressed in the units to :

In the gas phase reaction, C_(2H_(5) + H_(2)hArrC_(2)H_(6) , the equilibrioum constant can be expressessed in units of

For gaseous reaction N_2(g) +3H_2(g) hArr 2NH_3(g) , the units of equilibrium constant K_p are ………..

For the gaseous reaction C_2H_4 + H_2 The equilibrium constant, has the units

For the gas phase reaction C_(2) H_(4) + H_(2) hArr C_(2) H_(6) (Delta H = - 32.7 K.cal ) carried out in a closed vessel, the equilibrium moles of C_(2)H_(4) can be increased by

The equilibrium concentration of C_(2)H_(4) in the gas phase reaction C_(2)H_(4)+H_(2)hArr C_(2)H_(6), DeltaH=-32.7 kcal/mole, can be increased by I. Removal of C_(2)H_(6) II. Removal of H_(2) III. Increasing temperature IV. Increasing pressure The correct choice is :

For the gas phase reaction C_(2) H_(4) + H_(2) hArr C_(2) H_(6) (Delta H = - 32.7 K.cal ) carried out in a vessel, the equilibrium concentration of C_(2)H_(4) can be increased by