During osmosis, flow of water through a semi permeable membrane is
From solution having higher concentration only
From both sides of semi-permeable membrane with equal flow rates
From both sides of semi-permeable membrane with unequal flow rates
From solution having lower concentration only
A solution contains non- volatile solute of molecular mass, M2. Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure?
Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has a density of 1.80 g mL-1. Volume of acid required to make one litre of 0.1 M H2SO4 solution is
11.10 mL
16.65 ml
22.20 mL
5.55 mL
Pure water can be obtained from sea water by
Centrifugation
Plasmolysis
Reverse osmosis
Sedimentation
A solution containing 10 g per dm3 of urea (molecular mass = 60 g mol-1) is isotonic with a 5% solution of a non-volatile solute with molar mass
250 g mol-1
300 g mol-1
350 g mol-1
200 g mol-1
According to Raoult's law, relative lowering of vapour pressure of a solution is equal to
moles of solute
moles of solvent
mole fraction of solute
mole fraction of solvent
Formation of a solution from two components can be considered as
Solution so formed will be ideal, if
ΔHsoln = ΔH1 - ΔH2 - ΔH3
ΔHsoln = ΔH3 - ΔH1 - ΔH2
ΔHsoln = ΔH1 + ΔH2 + ΔH3
ΔHsoln = ΔH1 + ΔH2 - ΔH3
The lowest vapour pressure is exerted by
Water
Mercury
Kerosene
Rectified Spirit
A solution containing components A and B follows Raoult's law, when
A-B attraction force is greater than A - A and B- B
A - B attraction force is less than A - A and B - B
A- B attraction force remains same as A - A and B - B
Volume of solution is different from sum of volumes of solute and solvent
Which of the following 0.10 M aqueous solutions will have the lowest freezing point?
Al2(SO4)3
C5H10O5
KI
C12H22O11
