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Question
Chemistry
Which of the following has been arranged in the increasing order of freezing point?
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Q. Which of the following has been arranged in the increasing order of freezing point?
Solutions
A
$0.025 \,M \,KNO _{3}<0.1 \,M\, NH _{2} CSNH _{2} < 0.05 \,M\, BaCl _{2} < 0.1\, M \,NaCl$
22%
B
$0.1 \,M \,NaCl < 0.05\, M \,BaCl _{2}< 0.1 \,M\, NH _{2} CSNH _{2} < 0.025 \,M\, KNO _{3} $
32%
C
$0.1\, M \,NH _{2} CSNH _{2} < 0.1\, M \,NaCl < 0.05 \,M \,BaCl _{2} < 0.025 \,M \,KNO _{3} $
25%
D
$0.025\, M\, KNO _{3} < 0.05 \,M \,BaCl _{2} < 0.1 \,M\, NaCl < 0.1\, M\, NH _{2} CSNH _{2}$
21%
Solution:
Greater is the effective molarity ( $i \times C)$, higher the $\Delta T_{f}$ value and lower the freezing point.