The lattice enthalpy of calcium bromide is the energy change for the reaction A) CaBr₂(s) $\rarr$ Ca(g) + 2Br(g) B) CaBr₂(s) $\rarr$ Ca²⁺(g) + 2Br^-(g) C) Ca(s) + Br₂(l) $\rarr$ CaBr₂(s) D) CaBr₂(s)$\rarr$ Ca(g) + Br₂(g) E) Ca(g) + 2Br(g) $\rarr$ CaBr₂(g)

Question

Quizplus · Accepted Answer

Lattice enthalpy is defined as the energy change when one mole of an ionic compound forms from its free ions in the gas phase. Choice B correctly represents this process for calcium bromide, showing the formation of solid CaBr2 from gaseous Ca2+ and Br- ions.

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