Home
Class 12
CHEMISTRY
18 g of glucose (C(6)H(12)O(6)) is disso...

18 g of glucose `(C_(6)H_(12)O_(6))` is dissolved in 1 kg of water in a saucepn. At what temperature will water boil under 1.013 bar pressure ? Given `K_(b)` for water is 0.52 K kg `mol^(-1)`

Text Solution

Verified by Experts

`W_(B)=(M_(B)xxDeltaT_(b)xxW_(A))/K_(b) or DeltaT_(b)=(W_(B)xxK_(b))/(M_(B)xxW_(A)`
Mass of solute `(W_(B))`=18g
Mass of water `(W_(B))`=1 kg
Molar mass of solute `(M_(B))`= 0.52 K kg `mol^(-1)`
Molal elevation constant `(K_(b))`=0.52 K kg `mol^(-1)`
`DeltaT_(b)=((18g)xx(0.52 K kg mol^(-1)))/((180 g mol^(-1))xx(1 kg))=0.052 K`
At 1.013 bar pressure (atmospheric pressure), boiling point of water= 37300K
Boiling point of solution= `(373.0+0.052 K)`
Promotional Banner

Similar Questions

Explore conceptually related problems

18 g of glucose (C_(6)H_(12)O_(6)) is dissolved in 1 kg of water in a saucepan. At what temperature will the water boil (at 1 atm) ? K_(b) for water is 0.52 K kg mol^(-1) .

18g glucose (C_(6)H_(12)O_(6)) is added to 178.2g water. The vapour pressure of water (in torr) for this aqueous solution is:

Calculate the boiling point of solution when 4g of Mg SO_(4) (M=120g "mol"^(-1)) was dissolved in 100g of water, assuming MgSO_(4) undergoes complete ionization (K_(b) " for water " = 0.52 K " kg mol"^(-1))