Electrolysis of liquid water is represented by with

CHEMISTRY · Subjective · AP · Chemistry · Chemical Reactions · Chemical Reactions

Problem

Electrolysis of liquid water is represented by 2 H2O(l)→2 H2(g)+O2(g)2\,\text{H}_2\text{O}(l)\rightarrow 2\,\text{H}_2(g)+\text{O}_2(g) with ΔH=+572 kJ\Delta H=+572\,\text{kJ}. Decide whether this process is a chemical change or a physical change and justify your answer using both the change in composition and the energy information provided.

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