From the following data at`25^(@)C`
`{:(Reaction ,Delta_(r)H^(o)kJ//mol),((1)/(2)H_(2)(g)+(1)/(2)O_(2)(g)toOH(g),42),(H_(2)(g)+(1)/(2)O_(2)(g)to H_(2)O(g),-242),(H_(2)(g)to 2H(g),436),(O_(2)(g)to2O(g),495):}`
Which of the following Statement (s) is /are Correct:
StatementA:`Delta_(r)H^(@) "for the reaction"`
`H_(2)O(g)to2H(g)+O(g)"is 925.5kJ/mol"`
Statement B:`Delta_(r)H^(@) "for the reaction"`
`H_(2)O(g)toH(g)+O(g)"is 423.5kJ/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

Options

A. Statement C
B. Statement A,B,D
C. Statement B,C
D. Statement A,B only

Answer

b