Determine DH solute for KBr if the DH solution (KBr) = +19.9 kJ/mol and the %u03

Question

Determine DHsolute for KBr if the DHsolution (KBr) = +19.9 kJ/mol and the %u0394Hhydration(KBr)=-670. kJ/mol. Determine DHsolute for KBr if the DHsolution (KBr) = +19.9 kJ/mol and the %u0394Hhydration(KBr)=-670. kJ/mol. -710 kJ/mol +650 kJ/mol +690 kJ/mol -690 kJ/mol -650 kJ/mol Determine DHsolute for KBr if the DHsolution (KBr) = +19.9 kJ/mol and the %u0394Hhydration(KBr)=-670. kJ/mol. -710 kJ/mol +650 kJ/mol +690 kJ/mol -690 kJ/mol -650 kJ/mol Determine DHsolute for KBr if the DHsolution (KBr) = +19.9 kJ/mol and the %u0394Hhydration(KBr)=-670. kJ/mol. -710 kJ/mol +650 kJ/mol +690 kJ/mol -690 kJ/mol -650 kJ/mol Determine DHsolute for KBr if the DHsolution (KBr) = +19.9 kJ/mol and the %u0394Hhydration(KBr)=-670. kJ/mol. -710 kJ/mol +650 kJ/mol +690 kJ/mol -690 kJ/mol -650 kJ/mol Determine DHsolute for KBr if the DHsolution (KBr) = +19.9 kJ/mol and the %u0394Hhydration(KBr)=-670. kJ/mol. -710 kJ/mol +650 kJ/mol +690 kJ/mol -690 kJ/mol -650 kJ/mol -710 kJ/mol +650 kJ/mol +690 kJ/mol -690 kJ/mol -650 kJ/mol

Explanation / Answer

%u0394Hsolution = %u0394Hsolute + %u0394Hhydration

%u0394Hsolute = %u0394Hsolution %u2013 %u0394Hhydration = +19.9 kJ/mol %u2013 (- 670. kJ/mol) = 689.8 kJ/mol = 690 kJ/mol

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