A-LevelChemistryChemical energetics9701/12 · May/June 2018 · Q71 Mark
The enthalpy change of reaction 1 is –114 kJ mol⁻¹. 2NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2H2O(l) reaction 1 By using this information, what is the most likely value for the enthalpy change of reaction 2? Ba(OH)2(aq) + 2HCl(aq) → BaCl2(aq) + 2H2O(l) reaction 2
A-57 kJ mol⁻¹
B-76 kJ mol⁻¹
C-114 kJ mol⁻¹
D-228 kJ mol⁻¹
✓ Correct answer
C: -114 kJ mol⁻¹
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