Home
Class 12
CHEMISTRY
How many grams of sucrose must be added ...

How many grams of sucrose must be added to `360g` of water to lower the vapour pressure by `1.19mm Hg` at a temperatue at which vapour pressure of pure water is `25 mmHg` ?

A

342 g

B

360 g

C

375 g

D

380 g

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

How many grams of sucrose must be added to 320 g of water to lower the vapor pressure by 1.5 mmHg at 25^(@)C ? The vapor pressure of water is 23.8 mmHg and the molar mass of sucrose is 342 g mol^(-1) . Strategy: If the solute like sucrose is nonvolatile, the vapor pressure of the solution is entirely due to the vapor pressure of the solvent, P_("solution")=P_("solvent") . According to Raoult's law, P_("soln")=P_("solv")^(0) chi_("solv") , which can be rearranged to the form chi_("solv")=P_("soln")//P_("solv")^(0) . This equation can then be solved to find the number of moles of sucrose and hence the grams.

Moles of K_(2)SO_(4) to be dissolved in 12 mol water to lower its vapour pressure by 10 mmHg at a temperature at which vapour pressure of pure water is 50 mm is:

Moles of Na_(2)SO_(4) to be dissoved in 12 mole water to lower its vapour pressure by 10 mm Hg at a temperature at which vapour pressure of pure water is 50 mm is:

Moles of K_(2)SO_(4) to be dissolved in 12 moles of water of lower its vapour pressure by 10mm Hg at a temperature at which vapour pressure of pure water is 50mm Hg is

What weight of glucose (mol.wt. = 180 ) would have to be added to 1700 g of water at 20^(@)C to lower its vapour pressure 0.001 mm ? The vapour pressure of pure water is 17 mm Hg at 20^(@)C .

4.375 g of a substance when dissolved in 36.0 g of water, lowered its vapour pressure by 0.5 mm at a given temperature. The vapour pressure of water at this temperature is 25.0 mm . Calculate the molecular weight of solute.

10 g of glucose (molar mass 180) and 20 g of sucrose (molar mass 342) are dissolved in 100 g of water. What will be the vapour pressure of the resultant solution if the vapour pressure of water is 30 mm Hg ?