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An aqueous solution of glucose containin...

An aqueous solution of glucose containing `12 g` in `100 g` of water was found to boil at `100.34^(@)C`.
Calculate of `K_(b)` for water in `K mol^(-1)Kg`.

Text Solution

Verified by Experts

Given, `b.pt.` of water `= 100^(@)C`
`b.pt.` of solution`=100.34^(@)C`
Elevation in `b.pt., DeltaT= 0.34^(@)C`,
`w=12 g, w= 100 g, m=180`
`DeltaT=(1000K_(b)w)/(mW)`
or `0.34=(1000xxK_(b)xx12)/(180xx100)`
`k_(b)= 0.51 mol^(-1)kg`
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