# Page 39 Data:

Solution	BP(^oC)	ΔBP(^oC)	FP(^oC)	ΔFP(^oC)
H₂O	98.5	XXXXX	0	XXXXX
C₆H₁₂O₆	102.0	3.50	-2.00	2.00
KNO₃	100.5	2.00	-3.50	3.50

Analysis:

Solution	avg Molality(m)	avg experimental molar mass(g/mol)	actual molar mass(g/mol)	avg percent error(%)
H₂O	xxxxx	xxxxx	xxxxx	xxxxx
C₆H₁₂O₆	3.94	107	180.156	40.6
KNO₃	1.45	104	101.11	2.97

KNO₃: Boiling: m=2.00/(2\*0.512) m=1.94m \*(50/1000)=0.097 mol 10/0.097= 103 g/mol Freezing: m=3.50/(2\*1.85) =0.950m \*(50/1000) =0.0475 mol 5/0.0475=105 g/mol C₆H₁₂O₆: Boiling: m=3.50/0.515 =6.80m \*(50/1000)=0.34 mol 10/0.34=29.4 g/mol Freezing: m=2.00/1.85 = 1.08m 8(50/1000)=0.054 mol 10/0.054=185 g/mol % error: KNO₃: Boiling: |103-101|/101 \*100%=1.98% error Freezing: |105-101|/101 \*100%=3.98% error C₆H₁₂O₆: Boiling: |29.4-180|/180 \*100%=83.7% error Freezing: |185-180|/180 \*100%=2.78% error