A fixed mass m of a gas is subjected to transformation of states from K to L to M to N and back to K as shown in the figure.

The succeeding operations that enable this transformation of states are

A fixed mass m of a gas is subjected to transformation of states from K to L to M to N and back to K as shown in the figure.

The pair of isochoric processes among the transformation of states is

_{2}(g), H

_{2}O(l) and glucose(s) at 25

^{o}C are –400 kJ/mol, –300 kJ/mol and –1300 kJ/mol, respectively. The standard enthalpy of combustion per gram of glucose at 25

^{o}C is

Using the data provided, calculate the multiple bond energy (kJ mol^{$$-$$1}) of a C=C bond in C_{2}H_{2}. That energy is (take the bond energy of C-H bond as 350 kJ mol^{$$-$$1}).

$$\matrix{ \hfill {2C(s) + {H_2}(g) \to {C_2}{H_2}} & \hfill {\Delta H = 225\,kJ\,mo{l^{ - 1}}} \cr \hfill {2C(s) \to 2C(g)} & \hfill {\Delta H = 1410\,kJ\,mo{l^{ - 1}}} \cr \hfill {{H_2}(g) \to 2H(g)} & \hfill {\Delta H = 330\,kJ\,mo{l^{ - 1}}} \cr } $$