Avery B.

asked • 04/05/21

Calculate enthalpy change

Given the following two reactions:

(1)Pb(s) + Cl2(g)PbCl2(s)     H(1) = -359.4 kJ

(2)Mg(s) + Cl2(g)MgCl2(s)     H(2) = -641.3 kJ

calculate the enthalpy change for the following reaction:

(3) Pb(s) + MgCl2(s) PbCl2(s) + Mg(s)     H(3) = ???? kJ

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