Consider the plot of solubility curves in Question 2. For which of the following substances is the sign of ΔHsoln negative?
- ammonium chloride
- cerium sulfate
- potassium chlorate
- sodium nitrate
Question & Answer
Consider the plot of solubility curves in question 2. For which of the following substances is the sign of δhsoln negative? Select all that apply. Remember that for this type of question, canvas will award points for correct selections and deduct points for incorrect selections.
2 Answers
Verified archivecerium sulfate
Examining the slopes of the given curves:
- NH4Cl (ammonium chloride) has a positive slope, indicating negative ΔHsoln
- Ce2(SO4)3 (cerium sulfate) has a negative slope, indicating positive ΔHsoln
- KClO3 (potassium chlorate) has a positive slope, indicating negative ΔHsoln
- NaNO3 (sodium nitrate) has a positive slope, indicating negative ΔHsoln
Therefore, the substance with a negative enthalpy of solution (ΔHsoln) is ammonium chloride (NH4Cl).