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Which of the following solutions will have the lowest freezing point? a
Which of the following solutions will have the lowest freezing point?
| a. |
0.010 m Li2SO4 |
|
| b. |
0.015 m MgCl2 |
|
| c. |
0.035 m CH3CH2CH2OH |
|
| d. |
0.010 m NaCl |
Expert Solution
ΔTf = i*Kf*m
ΔTf is the depression in freezing point
ΔTf will be maximum when i*m is maximum
so, lowest freezing point if for that solution which has higher value of i*m
0.010 m Li2SO4: i*m = 3*0.010= 0.030
0.015 m MgCl3: i*m = 3*0.015 = 0.045
0.035 m CH3CH2CH2OH: i*m = 1*0.035 = 0.035
0.010 m NaCl: i*m = 2*0.010 = 0.020
Answer: 0.015 m MgCl2
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