1.

Consider the following reactions:(i)H+(aq)+OH–(aq)→H2O(l),ΔH=–X1 kJ mol–1(ii)H2(g)+12O2(aq)→H2O(l),ΔH=–X2 kJ mol–1(iii)CO2(g)+H2(g)→CO(g)+H2O(l),ΔH=–X3 kJ mol–1(iv)C2H2(g)+52O2(g)→2CO2(g)+H2O(l),ΔH=X4 kJ mol–1Enthalpy of formation of H2O(l) is:

Answer»

Consider the following reactions:

(i)H+(aq)+OH–(aq)→H2O(l),ΔH=–X1 kJ mol–1

(ii)H2(g)+12O2(aq)→H2O(l),ΔH=–X2 kJ mol–1

(iii)CO2(g)+H2(g)→CO(g)+H2O(l),ΔH=–X3 kJ mol–1

(iv)C2H2(g)+52O2(g)→2CO2(g)+H2O(l),ΔH=X4 kJ mol–1

Enthalpy of formation of H2O(l) is:


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