Home
Class 12
CHEMISTRY
The weight of solute (MW-60) required to...

The weight of solute (MW-60) required to be added in 180 g of water to reduce the vapour pressure to 4/5th of pure water is :

Text Solution

Verified by Experts

`:.(P_(o)P_(S))/(P_(s))=(wxxM)/(mxxW)`
`P_(s)=(4P_(o))/(5)=m=60, w=? W=180 g, M=18`
`:.(P_(o)-(4P_(0))/(5))/((4P_(0))/(5))=(wxx18)/(60xx180)`
`:. W=(60xx180)/(4xx18)=150g`
Promotional Banner

Similar Questions

Explore conceptually related problems

What weight of solute (mol. Wt. 60) is required to dissolve in 180 g of water to reduce the vapour pressure to 4//5^(th) of pure water ?

What weight of solute (mol. Wt. 60) is required to dissolve in 180 g of water to reduce the vapour pressure to 4//5^(th) of pure water ?

Twenty grams of a solute are added to 100g of water at 25^(@)C . The vapour pressure of pure water is 23.76 mmHg , the vapour pressure of the solution is 22.41 Torr. (a) Calculate the molar mass of the solute. (b) What mass of this solute is required in 100g of water of reduce the vapour pressure ot one-half the value for pure water?

The amount of solute (molar mass 60 g mol^(-1) ) that must be added to 180 g of water so that the vapour pressure of water is lowered by 10% is

What is the mass of a non-volatile solute (molar mass 60) that needs to be dissolved in 100 g of water in order to decrease the vapour pressure of water by 25%. What will be the molality of the solution?

What mass of non-volatile solute, sucrose, need to be dissolved in 100g of water to decrease the vapour pressure of water by 30%?

What mass of urea be dissolved in 171 g of water so as to decrease the vapour pressure of water by 5% ?

What should be the mass of glucose to be added to 900 g water to decrease vapour pressure by 1% ?

At room temperature, a dilute solution of urea is prepared by dissolving 0.60 g of urea in 360 g of water. If the vapour pressure of pure water at this temperature is 35 mm Hg, lowering of vapour pressure will be: (molar mass of urea =60 g "mol"^(-1) )

What weight of the non-volatile urea ( NH_2- CO - NH_2 ) needs to be dissolved in 100g of water in order to decrease the vapour pressure of water by 25%? What will be molality of the solution?