Calculate the standard enthalpy change for the following reaction at 25 °C

standard-enthalpy

#1

**Calculate the standard enthalpy change for the following reaction at 25 °C. Standard enthalpy of formation values can be found in this table. **

MgCl2(l) +H2O(l)=MgO(s)+ 2HCL(g)

Answer:

Calculate

HRxn = Hprod - Hreact

HRxn = H-MgO + 2*H-Hcl) - (H-MgCl2 + H-H2O(l)

HRxn = (-601.6 + 2*-92.3) - ( -641.8 + -285.8)

Hrxn = 141.4 kJ/mol.