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change in volume when 100 ml PH3 decomposed to solid p &H2gas.
what is the effect of temperature and pressure of coordination number of ionic crystals?Explain in detail.
when NaCl is added to aqueous of glucose
The vapour pressure of an aqueous solution of glucose is 750 mm Hg at 373 K . Calculate molality and mole fraction of solute.
in ideal solution of non volatile solute B and solvent Ain 2 :5 molar ratio has vapour pressure 250 mm. if a another solution in ratio 3:4 prepared then vapour pressure above this solution
1) 200 mm
2) 250 mm
3) 350 mm
4) 400 mm
which of following has maximum freezing point
1) pure water
2) 0.1M NaCl(aq)
3) 0.01M NaCl(aq)
4) 0.5M NaL(aq)
a solution containing 8.6 g/L of urea is isotonic with 5% solution of unknown solute . The molar mass of solute will be
1) 348.9 g/mol
2) 174.5 g/mol
3) 87.3 g/mol
4) 34.89 g/mol
K4[Fe(CN)6] is supposed to be 40% dissiciated when 1M solution prepared . its boiling point is equal to another 20% mass by volume of non-electrolytic solution A . Considering molality=molarity. The molecular weight of A is
what happens when saturated solution of KCl is heated..??
substance A tetramerises in water to a extent of 80% . A solution of 2.5g of A in 100g of water lowers the freezing point by 0.3degree C . The molar mass of A is
lowering in vapour pressure is the highest for :
(a) 0.2m urea
(b) 0.1m glucose
(c) 0.1m MgSO4
(d) 0.1m BaCl2
20 ml of 0.2M Al2(SO4)3 is mixed with 20ml of 6.6 M BaCl2 , the concertration of Cl- ion in solution is
two liquids A and B have vapour pressure of 500mm of Hg and 200mm of Hg respectively . calculate the mole fraction of A at which two liquids have equal partial pressures.
which of the solutions wil have a lower vapour pressure and why?
1. a 5% solution of cane sugar
2. a 5% solution of urea
1000g aqueous solution of CaCO3 contain 10g of calcium carbonate concentration of the solution is :
degree of dissociation of Ca(NO)3 in dilute aqueous solution containing 7g of solute per 100g of water at 100degree celsius is 70%. if the vapour pressure of water at 100degree celsius is 760mm of mercury, calculate the vapour pressure of the solution
for associative solutes
2) i1 andalpha (α) 1
3) ialpha (α)1
4) i1 andalpha (α)
Which of the following will have highest boiling point?
a. 0.1M FeCl3 b. 0.1M Urea c. 0.1M NaCl d. 0.1 M Glucose
how is the vapour pressure of a solvent affected when a non volatile solute is dissolved in it ?
give reason for the following
1. tetrahedral Ni(2) complexes are paramagnetic but square planar Ni(2) complex are diamagnetic
2. only transition metals are know to form pie complexes ..
what do you expect to happen when RBC placed in
1. 1%NaCl solution
2 0.9%NaCl solution
3 0.5%NaCl solution
what is the difference between mole fraction in liquid state and mole fraction in vapour phase
The mass of sodium hydroxide (NaOH) required in making 4 kg of 0.5 molal aqueous solution is: solve it ..
A 5% solution (wt./mol) of cane sugar is isotonic with 0.877% (wt./vol) of urea solution . Find mol. wt. of urea if the mol. wt. of sugar is 342.
when a non volatile solute is added to a solvent the vapour pressure of the liquid decrease because the number of solvent molecules on the surface decrease and as a result number of solvent molecules escaping from the surface decrease what does it mean
Henry's law constant for N2 at 293 K is 76.48 kbar. If N2 is bubbled through water at 293 K at a pressure of 1 atm . Then how many milimoles of it will dissolve in 10 ltr of water.
if any solute A dimerises in water at 1atm pressure and the boiling point of this solution is 100.52 degree C. if 2moles of A is added to 1kg of water and Kb for water is 0.52 degreeC/ molal, calculate the percentage association of A
an aqueous solution containg 1.70g of cane sugar in 100ml water begins to freeze at -0.093 degre centigrade. the cryoscopic constnt of water is 1.86 k kg mole inverse . calculate the molecular mas of cane sugar?
Decreasing order of osmotic pressure for 0.01 M aqueous solutions of
Differentiate between molality and molarity of a solution. What is the effect of change in temperature of a solution on its molality and molarity?
Molarity of a solution is defined as the number of gram moles of solute present in l L of solution, while molality of a solution is defined as the number of gram moles of solute present in 1 kg of solvent.
Molality of a solution decreases with increase in temperature, while molality of a solution is not affected by temperature.
your answer for above question is not crrect kindly rectify.
Which statement is true for solution of0.020 MH2SO4...........
a) 2 litre of the solution contains 0.020 mole of SO42-.
b) 2 litre of the solution contains 0.080 mole of H3O+.
c) 1 litre of the solution contains 0.020 mole of H3O+.
d) None of these.
Please explain in detail.........
Everyone, please share their answers for the question
two liquids having vapour pressure P1 and P2 in pure state in the ratio of 2:1 are mixed in the molar ratio of 1:2 . the ratio of their moles in vapour state would be
1) 1 :1
2) 1 :2
ifα(alpha) = 50% for Al2(SO4)3, then van't hoff factor would be
Calculate the normal freezing point of a sample of sea water containing 3.8% NaCl and 0.12% MgCl2 by mass.(Cryoscopic Constant for water = 1.86K/m)
when CuSO4 is added to a solution of ammonia
1) freezing point is lowerd
2) freeing point is raised
3) boiling point is raised
4) both 1 and 3
A solution will freeze when its vapour pressure equals the vapour pressure of the pure solid solvent .What it do mean .
what weight of non volatile solute urea ,needs to be dissolved in 100gms of water in order to decrease the vapour pressure of water by 25% ?
normality of 2M sulphuric acid is....... explain
The ratio of the value of any colligative property for KCl solution to that for sugar is nearly ........... times.
solution having minimum boiling pointis?
1) 0.1M C6H12O6
2) 0.1M CaCl2
3) 0.1M NaCl
4) 0.5M AlCl3
the osmotic pressure of decimolar solution of urea at 27degree C
1) 2.49 bar
3) 3.4 bar
4) 1.25 bar
Why is the mass determined by measuring a colligative property in case of
name the solute and solvent in the following solutions:
b)haze9dust in air)
c)butter(water in fat)
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