Calculate `Delta H-DeltaU` at `25^@C` for the reaction:`H_2(g)+( 1/2)O_2(g) = H_2O(l)`.

Delta H- Delta U for the reaction C_3H_8(g) +SO_2 (g) = 3CO_2 (g) + 4H_2O (g) .

Assuming experimental conditions are the same, compare (DeltaH-DeltaU) values for the gives reaction: (1) H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l) (2) H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(g) .

Calculate DeltaG^(0) for the reaction H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l) at 298K. Given, at 298K DeltaH_(f)^(0) for H_(2)O(l) is -286 kJ *mol^(-1) and the molar entropies (S^(0)) for H_(2)(g),O_(2)(g) and H_(2)O(l) are 130.7, 205.1 and 69.9 J*K^(-1)*mol^(-1) respectively.

Given that (at 25^(@)C) : (1)/(2)H_(2)(g)+(1)/(2)O_(2)(g) to OH(g), Delta H^(0)= 38.95 " kJ mol"^(-1) H_(2)(g)+(1)/(2)O_(2)(g) to H_(2)O (g), Delta H^(0) = -241.8 " kJ mol"^(-1) H_(2)(g) to 2H(g), Delta H^(0)= 436.0 " kJ mol"^(-1) O_(2)(g) to 2O (g), Delta H^(0)= 498.3 " kJ mol"^(-1) Calculate Delta H^(0) for the following reaction - (a) OH(g) to H(g)+O(g) (b) H_(2)O(g) to 2H(g)+O(g)

Calculate the enthalpy change for the reaction: C_(2)H_(4)(g)+3O_(2)(g) to 2CO_(2)(g)+2H_(2)O(l) Given: C_(2)H_(6)(g)+(7)/(2)O_(2)(g) to 2CO_(2)(g)+3H_(2)O(l),DeltaH^(0)=-1562.0kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaH^(0)=-286.0kJ C_(2)H_(4)(g)+H_(2)(g)toC_(2)H_(6)(g),DeltaH^(0)=-32.0kJ

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) .

At 25^@C What is the difference between DeltaH and DeltaS for the following reaction? 2H_2(g)+O_2(g)rarr 2H_2O(l)

Calculate DeltaH for this reaction, H_2(g)+O_2(g) rarr H_2O_2(g) B_(H-H)=436 kJ, B_(O-O)=142 kJ, B_(O=O)=499 kJ, B_(O-H)=460 kJ

Calculate DeltaH^(0) for the following reaction at 298K: C_(2)H_(2)(g)+CO(g)+H_(2)O(l)toC_(2)H_(3)COOH(l) Given: at 298K temperature, C_(2)H_(3)CO_(2)H(l)+3O_(2)(g)to3CO_(2)(g)+2H_(2)O(l),DeltaH^(0)=-1368kJ 2C_(2)H_(2)(g)+5O_(2)(g) to 4CO_(2)(g)+2H_(2)O(l),DeltaH^(0)=-2600kJ 2CO(g)+O_(2)(g) to 2CO_(2)(g),DeltaH^(0)=-566kJ .

Given C (graphite) + O_(2) (g) to CO_(2) (g) Delta ""_(r) H^(0) = -393.5 k J * mol^(-1) H_(2) (g) + (1)/(2) O_(2) (g) to H_(2) O (l) , Delta ""_(r) H^(0) = -285.8 kJ * mol^(-1) CO_(2) (g) + 2 H_(2) O(l) to CH_(4) + 2 O_(2) (g) , Delta ""_(r)H^(0) = + 890 . 3 kJ * mol^(-1) Based on the above thermochemical equations , the value of Delta ""_(r) H^(0) at 298 K for the reation C(graphite) + 2 H_(2) (g) to CH_(4) (g) will be -