Determine Δ_soluteH for KBr if the Δ_solutionHfor KBr is +19.9 kJ mol^-1 and the Δ_hydrationH for KBr is -670. kJ mol^-1. A) +650 kJ mol^-1 B) -650 kJ mol^-1 C) +690 kJ mol^-1 D) -710 kJ mol^-1 E) -690 kJ mol^-1

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Quizplus · Accepted Answer

Δ_soluteH = Δ_solutionH - Δ_hydrationH = 19.9 kJ/mol - (-670 kJ/mol) = 19.9 kJ/mol + 670 kJ/mol = 689.9 kJ/mol, which rounds to +690 kJ/mol.

Determine ΔsoluteH for KBr If the ΔsolutionH for KBr Is

Determine Δ_soluteH for KBr If the Δ_solutionHfor KBr Is