What Is ΔH°_rxn for the Following Reaction? H₃AsO₄(aq)+ 4H₂(g)→ AsH₃(g)

question 76

Multiple Choice

What is ΔH°_rxn for the following reaction? H₃AsO₄(aq) + 4H₂(g) → AsH₃(g) + 4H₂O(l)
Substance ΔH°_f(kJ/mol)
AsH₃(g) 171.5
H₃AsO₄(aq) -904.6
H₂O(l) -285.8

• A)-1876.3 kJ/mol
• B)-1018.9 kJ/mol
• C)-790.3 kJ/mol
• D)-410.1 kJ/mol
• E)-67.1 kJ/mol

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