Heat of reaction for,
`C_6H_(12)(s) + 6O_2(g) to 6 CO_2(g)+6H_2O(l)`
at constant pressure is -651 kcal at `17^@C`. Calculate the heat of reaction at constant volume at `17^@C`.

The heat of reaction for C_(10)H_8(s) + 12O_2 ,(g) rarr 10CO_2 ,(g) + 4H_2O(l) at constant volume is -1228.2 kcal at 25^@C . The heat of reaction at constant pressure and same temperature Is

At 25^(@)C , the heat of combustion of naphthalene at constant volume is -1230 " kcal mol"^(-1) . Calculate the heat of reaction at constant pressure and 25^(@)C .

During the reaction C_6H_12O_6+6O_2 to 6CO_2+6H_2O which compound is reduced ?

The standard entropy change for the reaction C_3H_(6(g)) + 9/2O_(2(g)) to 3CO_(2(g)) + 3H_2O_((l)) is – 339.23 JK-1 at 25^@C . Calculate the standard reaction enthalpy change if the standard Gibbs energy of formation of C_3H_(6(g)), CO_(2(g)) and H_2O_((l)) are 62.78, – 394.36 and –237.13 kJ. "mol"^(–1) respectively.

The value of enthalpy change (DeltaH) for the reaction C_2H_5OH(l) + 3O_2(g) → 2CO_2(g) + 3H_2O(l), at 27^@ C is -1366.5 kJ . The value of internal energy change for the above reaction at this temperature will be

The standard heat of formation of C_6 H_5 COOH (s) CO_2 (g) & H_2 O (1) at 300K are -408, - 393, & -286 Kj mol^-1 respectively. Calculate the heat of Combustion of Benzoic acid.

Given that : (i) heat of formation of water = -68.3 kcal (ii) heat of combustion of acetylene = - 310.6 kcal (iii) heat of combustion of ethylene = - 337.2 kcal. Calculate the heat of reaction for the hydrogenation of acetylene at constant volume (25^(@)C) .

At 25^(@)C and 1 atm, heat of formation of C_(2)H_(4) (g), CO_(2)(g) and H_(2)O(l) are 52 " kJ mol"^(-1), -394 " kJ mol"^(-1) and -286 " kJ mol"^(-1) respectively. Calculate the heat of combustion of C_(2)H_(4)(g) .

At 1 atm and 298K DeltaH^(0) value of the reaction 2H_(2)(g)+O_(2)(g)to2H_(2)O(l) is -572 kJ. Calculate the change in entropy of the system and surroundings for this reaction. Is this reaction spontaneous at that temperature and pressure? Given: Standard molar entropies of H_(2)(g),O_(2)(g)&H_(2)O(l) at 298K are 130.6, 205.0 and 69.90 J*K^(-1)*mol^(-1) respectively.

Standard heat of formation of C_2H_6(g),CO_2(g) and H_2O(l) are -21.1,-94.1 and -68.3 Kcal mol^(-1) respectively calculate standard heat of combustion of C_2H_6(g)