A solution is prepared by dissolving 2.5g of a non-volatile solute in 100g of water. The vapor pressure of the solution is found to be 22.87 Torr at . If the vapor pressure of pure water is 23.76 Torr at the same temperature, what is the molar mass of the solute (in g/mol)?
60
120
30
90
Related Questions
Which of the following describes a 0.5 molal solution?
0.5 moles of solute in 1 kg of solvent
1 mole of solute in 0.5 kg of solvent
0.5 moles of solute in 0.5 kg of solvent
1 mole of solute in 1 kg of solvent
A 1 molal aqueous solution contains 0.5 moles of solute. What is the mass of the solvent (water) in kilograms?
0.5 kg
1 kg
2 kg
1.5 kg
100 mL of 0.1 M solution of a reductant is diluted to 1 litre, which of the following changes?
Molarity
Millimole
Milliequivalent
None of these
If 1 kg of solvent contains 2 moles of solute, what is the molality of the solution?
1 molal
2 molal
0.5 molal
4 molal
How many moles of solute are present in a 2 molal solution containing 250g of solvent?
0.25 moles
0.5 moles
1 mole
2 moles
A solution is prepared by dissolving 0.25 moles of glucose in 500g of water. What is the molality of the glucose solution?
0.25 molal
0.5 molal
1 molal
2 molal
100 mL of 0.1 M solution of a reductant is diluted to 1 litre, which of the following changes?
Molarity
Millimole
Milliequivalent
None of these
