4. Solution to Chemistry Problem

4. Solution to Chemistry Problem

2. Calculate the standard enthalpy of formation of copper(II) chloride using the information about the heat effects of the following thermochemical equations:
CuO 2HClaq=CuCl2 H2 H2ΔH1=−63.93 kJ;
CuCl2aq=CuCl2 ΔH2=−46.39 kJ;
Cu 1/2O2=CuO ΔH3=−157 kJ;
H2 Cl2=2HClaq ΔH4=−329.08 kJ;
H2 1/2O2=H2O ΔH5=−286 kJ.

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