From the following data at 25^(@) C {:("Reaction" ,, Delta_(r) H^(@) kJ//mol) , ((1)/(2) H_(2) (g) + (1)/(2) O_(2) (g) to OH (g) ,, 42), (H_(2) (g) + (1)/(2) O_(2) (g) to H_(2) O (g) ,, -242), (H_(2) (g) to 2 H (g) ,, 436) , (O_(2) (g) to 2 O(g) ,, 495):} Which of the following statement(s) is/are correct : Statement(a) : Delta_(r) H^(@)for the reaction H_(2) O (g) to 2 H(g) + O(g) is 925 kJ/mol Statement (b) : Delta_(r) H^(@)for the reaction OH(g) to H_(2) (g) + O(g)is 502 kJ/mol Statement(c) : Enthalpy of formation of H(g) is – 218 kJ/mol Statement(d) : Enthalpy of formation of OH(g) is 42 kJ/mol

From the following data at 25^(@) C {:("Reaction" ,, Delta_(r) H^(@)

1.	From the following data at 25^(@) C {:("Reaction" ,, Delta_(r) H^(@) kJ//mol) , ((1)/(2) H_(2) (g) + (1)/(2) O_(2) (g) to OH (g) ,, 42), (H_(2) (g) + (1)/(2) O_(2) (g) to H_(2) O (g) ,, -242), (H_(2) (g) to 2 H (g) ,, 436) , (O_(2) (g) to 2 O(g) ,, 495):} Which of the following statement(s) is/are correct : Statement(a) : Delta_(r) H^(@)for the reaction H_(2) O (g) to 2 H(g) + O(g) is 925 kJ/mol Statement (b) : Delta_(r) H^(@)for the reaction OH(g) to H_(2) (g) + O(g)is 502 kJ/mol Statement(c) : Enthalpy of formation of H(g) is – 218 kJ/mol Statement(d) : Enthalpy of formation of OH(g) is 42 kJ/mol
Answer» STATEMENT C Statement a, B, d Statement b,c Statement a, d Answer :D