Determine enthalpy of formation for `H_(2)O_(2)(l)`, using the listed enthalpies of reaction : `N_(2)H_(4)(l)+2H_(2)O_(2)(l)toN_(2)(g)+4H_(2)O(l)`, `" "Delta_(r)H_(1)^(@)=-818kJ//mol` `N_(2)H_(4)(l)+O_(2)(g)toN_(2)(g)+2H_(2)O(l)` `" "Delta_(r)H_(2)^(@)=-622kJ//mol` `H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l)" "Delta_(r)H_(3)^(@)=-285kJ//mol`A. `-383" kJ"//mol`B. `-187" kJ"//mol`C. `-498" kJ"//mol`D. None of these

Determine enthalpy of formation for `H_(2)O_(2)(l)`, using the listed

1.	Determine enthalpy of formation for `H_(2)O_(2)(l)`, using the listed enthalpies of reaction : `N_(2)H_(4)(l)+2H_(2)O_(2)(l)toN_(2)(g)+4H_(2)O(l)`, `" "Delta_(r)H_(1)^(@)=-818kJ//mol` `N_(2)H_(4)(l)+O_(2)(g)toN_(2)(g)+2H_(2)O(l)` `" "Delta_(r)H_(2)^(@)=-622kJ//mol` `H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l)" "Delta_(r)H_(3)^(@)=-285kJ//mol`A. `-383" kJ"//mol`B. `-187" kJ"//mol`C. `-498" kJ"//mol`D. None of these
Answer» Correct Answer - B

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