The following thermochemical equation indicates that 258.9 kJ are absorbed in the reaction, if one mole of hydrogen reacts with oxygen to form water, H₂(g)+ 1/2 O₂(g)$\rarr$ H₂O(l), $\Delta$H° = -258.9 kJ

Question

Quizplus · Accepted Answer

The negative sign in the enthalpy change ($\Delta$H° = -258.9 kJ) indicates that the reaction is exothermic, meaning 258.9 kJ are released, not absorbed.

The Following Thermochemical Equation Indicates That 258 →\rarr→ H2O(l) Δ\DeltaΔ H° = -2589 KJ

The Following Thermochemical Equation Indicates That 258 $\rarr$ H₂O(l) $\Delta$ H° = -2589 KJ