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The 2.56gm of sulphur in 100gm of $CS_2$ has depression in freezing point of $0.010^{\large\circ}$C. $K_f=0.1^{\large\circ}C$/molal. Hence atomicity of sulphur in $CS_2$
jeemain
chemistry
class12
ch2
solutions
q87
colligative-properties
depression-of-freezing-point
medium
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Which of the following has the maximum osmotic at temperature T?
jeemain
chemistry
class12
ch2
solutions
q86
osmotic-pressure
colligative-properties
easy
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Mole fraction of the component 'A' in vapour phase is X and mol fraction of component 'A' in liquid mixture is Y $(P_A^0$=vapour pressure of pure A,$P_A^0$=vapour pressure of pure B) then total vapour of the liquid mixture is
jeemain
chemistry
class12
unit2
solutions
q85
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
pH of a 0.1M monobasic acid is found to be 2.Hence its osmotic pressure at a given temp T is
jeemain
chemistry
class12
unit2
solutions
q84
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
At room temperature $25^{\large\circ}C$,the vapour pressure of pure methyl alcohol is 92 torr.Mol fraction of $CH_3OH$ in a solution in which vapour pressure of $CH_3OH$ is 24 torr at $25^{\large\circ}$ is ?
jeemain
chemistry
class12
unit2
solutions
q83
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
At room temperature $25^{\large\circ}C$,the vapour pressure of pure methyl alcohol is 90 torr.Mol fraction of $CH_3OH$ in a solution in which vapour pressure of $CH_3OH$ is 20 torr at $25^{\large\circ}$ is ?
jeemain
chemistry
class12
unit2
solutions
q82
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Most likely the following mixtures to be an ideal solution is
jeemain
chemistry
class12
unit2
solutions
q81
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
At room temperature $25^{\large\circ}C$,the expression for total pressure of mixture of methanol and ethanol solution is given by P(in torr)$=135+120X$ where $X$ is mol fraction of methanol,Hence
jeemain
chemistry
class12
unit2
solutions
q80
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
When mercuric iodide is added to the aqueous solution of potassium iodide,the
jeemain
chemistry
class12
unit2
solutions
q79
difficult
asked
Feb 14, 2014
by
sreemathi.v
3
answers
Mixture of volatile components A and B has total vapour pressure (in torr) P=$250-115X_A$ where $X_A$ is mol fraction of 'A' in mixture.Hence $P_A^0$ and $P_B^0$ respectively are (in torr)
jeemain
chemistry
class12
unit2
solutions
q78
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Which of the following azeotropic solutions has the boiling point less than the boiling point of the constituents
jeemain
chemistry
class12
unit2
solutions
q77
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
An azeotropic solution of two liquids has a boiling point lower than either of them when it
jeemain
chemistry
class12
unit2
solutions
q76
difficult
asked
Feb 14, 2014
by
sreemathi.v
2
answers
Which is true about enthalpy of solution containing benzene and toluene?
jeemain
chemistry
class12
unit2
solutions
q75
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
The degree of dissociation $'\alpha'$ of a weak electrolyte is (N is number of ions given by 1 mol of the electrolyte)
jeemain
chemistry
class12
unit2
solutions
q74
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Which of the following has maximum freezing point for 1 molal solution, assuming equal ionisation in each case?
jeemain
chemistry
class12
unit2
solutions
q73
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
One mole each of the following solutes are taken in 1000g of water
jeemain
chemistry
class12
unit2
solutions
q72
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Lowering of vapour pressure due to a solute in 1 molal aqueous solutions at $100^{\large\circ}C$ is
jeemain
chemistry
class12
unit2
solutions
q71
difficult
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Match the column-I with column-II ,which are true for 20% w/w aqueous KI solution (density of KI solution is 1.20g/ml & M.wt of KI is 166 g/mol)
jeemain
chemistry
class12
unit2
solutions
q70
medium
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Match the column-I and column-II
jeemain
chemistry
class12
unit2
solutions
q69
medium
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Which is true about ideal solutions?
jeemain
chemistry
class12
unit2
solutions
q68
medium
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Total vapour pressure of mixture of 1 mole $X(P_x^0=150torr)$ and 2 mol Y$(P_y^0=240torr)$ is 210mm.In this case
jeemain
chemistry
class12
unit2
solutions
q67
medium
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Mole fraction of the benzene in the vapour phase which is in equilibrium with a solution of benzene $(p^0=120torr)$ and toluene$(p^0=80torr)$ having 4.0mole of benzene and 6 mole of toluene in solution.
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
medium
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Mole fraction of the benzene in the vapour phase which is in equilibrium with a solution of benzene $(p^0=120torr)$ and toluene$(p^0=80torr)$ having 2.0mole of each is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
medium
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Mole fraction of the toluene in the vapour phase which is in equilibrium with a solution of benzene $(p^0=120torr)$ and toluene$(p^0=80torr)$ having 2.0mole of each is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
medium
asked
Feb 14, 2014
by
sreemathi.v
1
answer
A $1.37\; M$ aqueous solution of citric acid ($H_3C_6 H_5O_7$; Molecular Weight = $192.1 g/mol$) has a density of $1.10 g/cm^{3}.$ What is the molality and mole fraction of the citric acid?
composition-of-a-solution
medium
basics
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
asked
Feb 13, 2014
by
sreemathi.v
1
answer
What is the molarity of 0.60N $H_3PO_4$ (a tribasic acid)in the following reaction?$H_3PO_4+2OH^-\rightarrow HPO_4^{2-}+2H_2O$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
easy
basics
asked
Feb 13, 2014
by
sreemathi.v
1
answer
What is the normality of 0.20M $H_3PO_4$ (a tribasic acid)in the following reaction?$H_3PO_4+2OH^-\rightarrow HPO_4^{2-}+2H_2O$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
easy
basics
asked
Feb 13, 2014
by
sreemathi.v
1
answer
The freezing point (in$^{\large\circ}C)$ of a solution containing 0.1g of $K_3[Fe(CN)_6]$ (mol .wt .329) in 100g of water $(K_t=1.86Kkgmol^{-1})$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
depression-of-freezing-point
easy
asked
Feb 13, 2014
by
sreemathi.v
1
answer
Dissolving 120g of urea (mol.wt.60) in 1000g of water gave a solution of density 1.15g/ml.The molarity of solution is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
medium
composition-of-a-solution
asked
Feb 13, 2014
by
sreemathi.v
1
answer
For dilute solutions containing 2.5g of a non-volatile non electrolyte solute in 100g of water,the elevation in boiling point at 1atm pressure is $4^{\large\circ}C$.Assuming concentration of solute is much lower than the concentration of solvent,the vapour pressure (mm of Hg) of the solution is (take $K_b=0.76Kkgmol^{-1})$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
lowering-vapour-pressure
elevation-of-boiling-point
difficult
asked
Feb 13, 2014
by
sreemathi.v
1
answer
For dilute solutions containing 2.5g of a non-volatile non electrolyte solute in 100g of water,the elevation in boiling point at 1atm pressure is $2^{\large\circ}C$.Assuming concentration of solute is much lower than the concentration of solvent,the vapour pressure (mm of Hg) of the solution is (take $K_b=0.76Kkgmol^{-1})$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
lowering-vapour-pressure
elevation-of-boiling-point
difficult
asked
Feb 13, 2014
by
sreemathi.v
1
answer
98%(w/w) $H_2SO_4$ stock solution has a density of 1.8gm$L^{-1}$.The molecular weight of $H_2SO_4$ is 98g$mol^{-1}$.The volume(ml) of stock solution required to prepare a 1800ml of 1.0N $H_2SO_4$ is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
29.2%(w/w) HCl stock solution has a density of 1.25g$ml^{-1}$.The molecular weight of HCl is 36.5$gmol^{-1}$.The volume (ml) of stock solution required to prepare a 500ml of 0.1M HCl is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
98%(w/w) $H_2SO_4$ stock solution has a density of 1.8g.m$L^{-1}$.The molecular weight of $H_2SO_4$ is 98g$mol^{-1}$.The volume (ml) of stock solution required to prepare a 450ml of 1.0M $H_2SO_4$ is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
98%(w/w) $H_2SO_4$ stock solution has a density of 1.8g.m$L^{-1}$.The molecular weight of $H_2SO_4$ is 98g$mol^{-1}$.The volume (ml) of stock solution required to prepare a 900ml of 0.5M $H_2SO_4$ is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
$29.2\%$(w/w) $HCl$ stock solution has a density of $1.25gmL^{-1}$. The molecular weight of $HCl$ is $36.5g\;mol^{-1}.$ Find the volume $(ml)$ of stock solution required to prepare a $200\;ml$ of $0.4\;M\; HCl$ is
cbse
class11
chemistry
ch1
some-basic-concepts-of-chemistry
jeemain
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
A 5.0 molal aqueous solution of methyl alcohol,$CH_3OH$ is supplied.What is the mole fraction of methyl alcohol in the solution?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
composition-of-a-solution
easy
asked
Feb 13, 2014
by
sreemathi.v
1
answer
Ethylene glycol is used as an antifreeze in a cold climate.How much mass of ethylene glycol should be added to $5\;kg$ of water to prevent it form freezing at -$6^{\large\circ}C$ will be : $(K_t$ for water =$1.86Kkg mol^{-1}$ and molar mass of ethylene glycol=$62g mol^{-1})$
colligative-properties
depression-of-freezing-point
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
On mixing ,heptane and octane form an ideal solution.At 373K,the vapour pressures of the two liquid components (heptane and octane) are 105kPa and 45kPa respectively.Vapour pressure of the solution obtained by mixing 25g of heptane and 35g of octane will be (molar mass of heptane=100g $mol^{-1}$ and octane=114g$mol^{-1}$)
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
lowering-vapour-pressure difficult
asked
Feb 13, 2014
by
sreemathi.v
1
answer
If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, what is the change in freezing point of water$(\Delta T_f)$,when 0.02mol of sodium sulphate is dissolved in 1kg of water,is $(K_f=1.86Kkgmol^{-1})$?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
depression-of-freezing-point
easy
asked
Feb 13, 2014
by
sreemathi.v
1
answer
A binary liquid solution is prepared by mixing n-heptane and ethanol.Which one of the following statements is correct regarding the behaviour of the solution?
jeemain
chemistry
class12
unit2
solutions
q46
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
If 200 mL of 0.1 M urea solution is mixed with 300 mL of 0.2 M Glucose solutions at 300 K calculate osmotic pressure.
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
osmotic-pressure
easy
asked
Feb 13, 2014
by
sreemathi.v
1
answer
Which of the following solutions will freeze at the lowest temperature?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
depression-of-freezing-point
easy
asked
Feb 13, 2014
by
sreemathi.v
1
answer
Which of the following solution boils at the highest temperature?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
elevation-of-boiling-point
easy
asked
Feb 13, 2014
by
sreemathi.v
1
answer
Which of the following aqueous solutions posses zero as Van't Hoff coefficient?
jeemain
chemistry
class12
unit2
solutions
q42
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
The Van't Hoff factor of $BaCl_2$ is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
vant-hoff
basics
easy
asked
Feb 13, 2014
by
sreemathi.v
1
answer
Which one of the following solutions will have the lowest freezing point?
jeemain
chemistry
class12
ch2
solutions
q40
medium
colligative-properties
depression-of-freezing-point
asked
Feb 13, 2014
by
sreemathi.v
1
answer
When a substance is dissolved in a solvent,the vapour pressure of the solvent is decreased.This result in
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
basics
easy
asked
Feb 13, 2014
by
sreemathi.v
1
answer
The osmotic pressures of equimolar solutions of glucose, potassium chloride and Barium chloride will be in the order
jeemain
chemistry
class12
unit2
solutions
q38
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
Which of the following is the correct expression for van't Hoff factor?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
colligative-properties
vant-hoff
basics
easy
asked
Feb 13, 2014
by
sreemathi.v
1
answer
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