Dominique M.

asked • 10/07/22

Enthalpy formation from enthalpy reaction

A scientist measures the standard enthalpy change for the following reaction to be 6.6 kJ :


Fe(s) + 2 HCl(aq)FeCl2(s) + H2(g)


Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of HCl(aq) is   kJ/mol.

standard enthalpy

HCl= −92.3 kJ/mol

2 HCl(aq)=−92.3 kJ/mol

FeCl2(s)= −341.79kJ/mol



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