For which case would ΔH soln be expected to be negative?A) if the solute-solute interactions are much greater then solvent-solvent and solute-solvent interaction.
B) if solvent-solvent interactions are much greater then solute-solvent and solute-solute interactions
C) if solute-solvent interactions are much greater then solvent-solvent and solute-solute interactions
D) if solute-solvent interactions are the same as solvent-solvent and solute-solute interactions
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I think its C, mainly because I know that if a solute and solvent are combined, the end result is an exothermic reaction and solution...
-ΔH soln = ΔH solute + ΔH solvent or -ΔHsoln = ΔH1 + ΔH2 + ΔH3
Am I right or am I missing it all together... it all seems like the answers are in tongue to me..
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Also, this seems to follow the same path.
Cold Packs contain solid NH4NO3 and a pouch of water. The temp. of the pack drops as NH4NO3 is dissolved in water. Therefore, for the dissolving of NH4NO3 in water... A) ΔH soln is negative and ΔS soln may be negative or positive
B) ΔH soln is negative and ΔS soln is positive
C) ΔH soln is positive and ΔS soln may be negative or positive
D) ΔH soln is positive and ΔS soln is positive
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I'm completely lost on this one, if the temp. drops does that means the solution is endothermic (positive)? Other then that guess I don't know what ΔS soln means, I'm assuming it C...