Question

Which of the following equations has Δ_fH° and ΔH° same?

Options

• \[\ce{H_{2(g)} + 1/2 O_{2(g)} -> H2O_{(l)}}\]

• \[\ce{N^+_{2(l)} + O_{3(g)} -> N2O_{3(g)}}\]

• \[\ce{2CO_{(g)} + O_{2(g)} -> 2CO_{2(g)}}\]

• \[\ce{CH_{4(g)} + 2Cl_{2(g)} -> CH2Cl_{2(g)} + 2HCl_{(g)}}\]

Answer 1

\[\ce{H_{2(g)} + 1/2 O_{2(g)} -> H2O_{(l)}}\]