Find ΔH∘ᵣₓₙ​ for the reaction 2Na(s)+2H₂​O(l)→2NaOH(aq)+2H₂​(g). ΔHf∘​(NaOH(aq))=−426.8kJ/mol; ΔHf∘​(H2​O(l))=−285.5kJ/mol.

a) 141.3kJ/mol
b) −141.3kJ/mol
c) −141.3J/mol
d) 141.3J/mol