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# 6) Out of three 1.0 m solutions of glucose (C6H12O6), sodium sulfate and ammon

ID: 982656 • Letter: #

Question

# 6) Out of three 1.0 m solutions of glucose (C6H12O6), sodium sulfate and ammonium phosphate which will have the highest boiling point, lowest freezing point, and lowest vapor pressure?

a. What do the solid lines in the phase diagram represent? Tu Tolid linl rtpresent fu phac transifon Wh as tree "Yolid 1multing' liquid, evaporation iga 1ru b. Is the triple point for water above or below 1 atm of pressure? l atm c. If sodium chloride is added to a solution of water, its vapor pressure decreases in comparison to a solution of pure water. Add this altered vapor pressure curve on the phase diagram constructed above. 4. Why does the vapor pressure of a solution decrease with the addition of a non-volatile solute? Vapor prtsivre decrtares be cavi the volair e Solvte i takine vp more spau Determine the van't Hoff factor for each of the compounds listed below: a. Glucose (CsH20s) b. Sodium sulfate N2u2 c. Ammonium phosphate N 5. 120s) NO jun 6. Out of three 1.0 m solutions of glucose (CH120s), sodium sulfate and ammonium phosphate which will have the highest boiling point, lowest freezing point, and lowest vapor pressure?

Explanation / Answer

as number of solute particles increase in the solution boiling point will increase , vapour pressure decrease and freezing point will decrease.

in above solutions

C6H12O6 will not dissociate.

Na2SO4 gives three ions in solution (2Na+  and SO4-2)

(NH4)3PO4 gives four ions 3 NH4+  and 1 PO4-3.

so ammonium phosphate gives more particles in solution. it have high boiling point , less vapour pressure and less freezing point among the given solutions.