Calculate the standard enthalpy of reaction at`25^@C` temperature for the following reaction :`C_6H_6(I)`+`frac 15/2 O_2`(g) `rarr` `6CO_2(g)+3H_2O(I)`. Given: The standard enthalpy of formation of `C_6H_6(I)`, `.CO_2(g)` and `H_2O(I)` are 49.0kJ `mol^-1`, -393.5 kJ `mol^-1` and -285.8 kJ `mol^-1` respectively.

Calculate the standard enthalpy of reaction at 25^(@)C temperature for the following reaction: C_(6)H_(6)(l)+(15)/(2)O_(2)(g) to 6CO_(2)(g)+3H_(2)O(l) Given:The standard enthalpy of formation of C_(6)H_(6),CO_(2)(g) and H_(2)O(l) are 49.0 kJ *mol^(-1),-393.5kJ*mol^(-1) and -285.8kJ*mol^(-1) respectively.

Calculate standard enthalpy of reaction at 25^(@)C for the reaction: C Cl_(4)(g)+2H_(2)O(g)toCO_(2)(g)+4HC l(g) . Given: The standard heat of formation of C Cl_(4)(g),H_(2)O(g),CO_(2)(g) and HC l(g) are -25.5,-57.8,-94.1 and -22.1kcal*mol^(-1) .

Calculate the difference between heat of reaction at constant pressure and at constant volume for the following reaction at 25^@C . 2C_6H_6(I) + 15O_2(g) rarr 12CO_2(g)+6H_2O(I) .

Calculate the standard enthalpy of formation of n- butane. Given : standard enthalpy of combustion of n- butane, C (graphite) and H_(2)(g) " are " -2878.5 " kJ mol"^(-1), -393.5 " kJ mol"^(-1) and -285.8 " kJ 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)

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.

Standard enthalpies of formation of O_3, CO_2, NH_3 and HI are 142.2, -393.2, -46.2 and +25.9 kJ mol^-1 respectively. The order of their increasing stabilities will be

At 25^(@) C, is the standard reaction enthalpy for the reaction 2H(g) +O(g)toH_(2)O(l) the same as the standard enthalpy of formation of H_(2)O(l) ?

The difference between the heats of reaction at constant pressure and a constant volume for the reaction 2C_6H_6(l)+15O_2(g)rarr12CO_2(g)+6H_2O(l) at 25^@C in kJ is