Arrows in the Energy Diagram Below Represent Enthalpy Changes Occurring

question 177

Multiple Choice

Arrows in the energy diagram below represent enthalpy changes occurring in the exothermic formation of a solution:
ΔH_soln = enthalpy of solution
ΔHsolute-solute = enthalpy change involving solute-solute interactions
ΔHsolute-solvent = enthalpy change involving solute-solvent interactions
ΔHsolvent-solvent = enthalpy change involving solvent-solvent interactions
-Which arrows represent ΔH_{solute-solute} and ΔH_{solvent-solvent}?

• A)arrow (a)and arrow (b)
• B)arrow (a)and arrow (c)
• C)arrow (a)and arrow (d)
• D)arrow (c)and arrow (d)

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