At `60^@C`, dinitrogen tetraoxide is fifty percent dissociated. Calculate the standard free energy change at this temperature and at one atmosphere.

The standard Gibb's free energy change, DeltaG^(@) is related to equilibrium constant, kp as

Oen litre of oxygen at a pressure of one atmosphere and two litres of nitrogen at a pressure of 0.5 atmosphere are introduced into a vessel of 1 litre capacity , with out any change in the temperature. The total pressure would be

The standard enthalpy or the decomposition of N_2 O_5 to NO_2 is 58.04 kJ and standard entropy of this reaction is 176.7 J/K. The standard free energy change for this reaction at 25^@ C is_____________.

Draw temperature v//s heat graph for water at one standard atmospheric pressure

For melting of ice at 25^@C the enthalpy of fusion is 6.97 kj mol^(-1) and entropy of fusion is 25.4 JK-1 mol^(-1) . Calculate free energy change and predict whether melting of ice is spontaneous or not at this temperature.

The solubility of nitrogen gas at1bar pressure at 25^@C is 6.8 xx 10^(-4) moldnr^(-3 . Calculate the solubility of N_2 gasfrom atmosphere at 25^@C if atmospheric pressure is 1 bar and partial pressure of N_2 gas at this temperature and pressure is 0.78 bar.

1.0 kg of liquid water is boiled at 100^@C and all of it is converted to steam. If the change of state takes place at the atmospheric pressure (1.01xx10^5Pa) ,calculate the energy transferredto the system.

The solubility of nitrogen gas at 2 atm pressure at 25^(@)C " is " 13.6xx10^(-4) mol dm^(-3) calculate the solubility of N_(2) gas from atmosphere at 25^(@)C, of atmospgeric pressure is 2 atmosphere and partial pressure of N_(2) gas at this temperature and pressure is 1.53 atm.

One mole of an ideal gas undergoes a cyclic change ABCD where the (P,V) co- ordinates are A (5,1), B(5,3), C(2,3), and D (2,1). P is in atmosphere and V is in litre . Calculate work dong along AB, BC, CD, and DA and also net work done in the process. (1 atmosphere = 1.01 xx 10^5 Nm^-2 )

The difference in temperature between two sides of a glass plate 0.3 mm thick is 25^@C . If the area of one side surface is 10 m^2 , calculate the heat conducted per second through the plate. The thermal conductivity of glass is 0.84 J//s m K.