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The freezing point depression constant f...

The freezing point depression constant for water is ` - 1.86 cm^(-1)` . If 5.00 g `Na_2SO_4` is dissolved in 45.0 g `H_2O` , the freezing point is changed by ` - 3.82^@C` . Calculate the van't Hoff factor for `Na_2SO_4` .

A

2.05

B

2.63

C

3.11

D

0.381

Text Solution

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The correct Answer is:
B
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The freezing point depression constant for water is 1.86^(@)C m^(-1) . If 5.00g Na_(2)SO_(4) is dissolved in 45.0 H_(2)O , the freezing point is charged by -3.82^(@)C . Calculate the van't Hoff factor for Na_(2)SO_(4) .

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