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Recent questions tagged solutions
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Colligative properties of the solution depend upon
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
The ratio of normal molecular mass to the abnormal molecular mass is called as
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
Which is not a colligative prolixity ?
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
Number of the parts by weight of solute in one million parts by weight of the solution is called as
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
Isotonic solutions have
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
The solubility of a gas in a liquid is directly proportional to the pressure of the gas. this statement is refers to
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
Osmotic pressure of the solution depends on :
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
A morality of pure water is :
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
The number of moles of solute per kg of a solution is called as
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
A solution is defined as a
cbse
class12
chemistry
ch-2
solutions
asked
Sep 9, 2015
by
meena.p
1
answer
18 gms of glucose and 6 gms Urea are dissolved in 1 litre aqueous solution at 27 °c. the osmotic pressure of solution will be
chemistry
class12
solutions
jeemain
jeeadvance
colligative
properties
asked
Jul 3, 2015
by
excellentdeals18
1
answer
calculate the molal solution depression constant of a solvent which has freezing point 16.6° and latent heat of fusion 180.75J/g
chemistry
class12
solutions
jeemain
jeeadvance
asked
Jul 2, 2015
by
excellentdeals18
1
answer
A sample of wustite $Fe_xO$ contains one $Fe(III)$ for every three $Fe(II).$ Calculate the value of x.
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
The composition of a sample of wiistite is $Fe_{0.93} O_{1.00-}$. What percentage of the ion is present in the form of $Fe(III)?$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
Calculate the percentage of void volume in the body centred
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
Calculate the percentage of void volume in the primitive
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
Lil occurs as cubical - closest packing . If the edge length of a unit cell is $624\;pm$ , determine the ionic radii of $Li^{+}$ and $I^{-}$ ions.
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
KCl crystallizes in the same type of lattice as does $NaCl$ . Given that $\large\frac{r_{Na^{+}}}{r_{cl^{-}}}$$=0.5$ and $\large\frac{r_{Na^{+}}}{r_{K^{+}}}$$=0.5$ calculate the ratio of density of NaCl to that KCl
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
KCl crystallizes in the same type of lattice as does $NaCl$ . Given that $\large\frac{r_{Na^{+}}}{r_{cl^{-}}}$$=0.5$ and $\large\frac{r_{Na^{+}}}{r_{K^{+}}}$$=0.5$ calcute the ratio of the unit cell for $KCl$ to that for $NaCl$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
If the radius of $Cs^{+}$ is $169\;pm$ and that of $Cl^{-}$ is $181\;pm$ , predict the structure of $CsCl$. What is the coordination number of $Cs^{+}$ ion ?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
A solid $A^{+}B^{-}$ has an $NaCl$ type closet packed structure . If the radius of the anion is $250\;pm$ What is the radius of the cation ?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
The atomic radius of stronitum is $215\;pm$ and it crystallizes with a cubical closest - packed structure . Calculate the density of strontium. The molar mass of strontium is $ 87.6\;g\;mol^{-1}$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
Caesium chloride may be considered to form interpenetrating simple primitive cubic crystals. The edge length of unit cell is $412\;pm$. Determine the ionic radius of $Cs^{+}$ if the ionic radius of $Cl^{-}$ if the ionic radius of $Cl^{-}$ is $181$ P.m Given $M(C_s)=133\;g\;mol^{-1}$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
Caesium chloride may be considered to form interpenetrating simple primitive cubic crystals. The edge length of unit cell is $412\;pm$. Determine the density of $CsCl$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
The edge length of cubic unit cell of metallic calcium is $556\;pm$ If the density of calcium is $1.54 \;g\;cm^{-3}$ and its molar mass is $40.08];g\;mol^{-1}$ calculate the radius of calcium atom.
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
Calculate the mole fraction of ethylene glycol $(C_2H_6O_2)$ in a solution containing 20% of $C_2H_6O_2$ by mass.
cbse
class12
chemistry
ch2
solutions
sec-c
medium
additionalproblem
q50
asked
Aug 8, 2014
by
sreemathi.v
1
answer
At 300K,36g of glucose present per litre in its solution has an osmotic pressure of 4.98 bar.If osmotic pressure of solution is 1.52 bar at the same temperature,what would be its concentration?
cbse
class12
chemistry
ch2
solutions
sec-a
easy
additionalproblem
q49
asked
Aug 8, 2014
by
sreemathi.v
1
answer
What is the mole fraction of a solute,in 2.5m aqueous solution?
cbse
class12
chemistry
ch2
solutions
sec-b
medium
additionalproblem
q48-b
asked
Aug 8, 2014
by
sreemathi.v
1
answer
A 4% solution of sucrose is isotonic with 3% solution of an unknown organic substance.Calculate the molecular mass of unknown substance .
cbse
class12
chemistry
ch2
solutions
sec-b
easy
additionalproblem
q48-a
asked
Aug 8, 2014
by
sreemathi.v
1
answer
A 0.1539 molal aqueous solution of cane sugar (mol mass =$342gmol^{-1}$) has a freezing point of 271K while the freezing point of pure water is $273.15K$.What will be the freezing point of an aqueous solution containing 5g of glucose (mol mass =$180gmol^{-1}$) per 100g of solution.
cbse
class12
chemistry
ch2
solutions
sec-b
medium
additionalproblem
q47
asked
Aug 8, 2014
by
sreemathi.v
1
answer
The freezing point of a solution containing 0.2g of acetic acid is 20.0g of benzene is lowered by $0.45^{\large\circ}$C.Calculate Van't Hoff factor .[For benzene,$K_f=5.12Kkg mol^{-1}]$.What conclusion can you draw from the value of Van't Hoff factor obtained.
cbse
class12
chemistry
ch2
solutions
sec-b
medium
additionalproblem
q46-ii
asked
Aug 8, 2014
by
sreemathi.v
1
answer
The freezing point of a solution containing 0.2g of acetic acid is 20.0g of benzene is lowered by $0.45^{\large\circ}$C. Calculate the molar mass of acetic acid from this data?[For benzene,$K_f=5.12Kkg mol^{-1}]$
cbse
class12
chemistry
ch2
solutions
sec-b
easy
additionalproblem
q46-i
asked
Aug 8, 2014
by
sreemathi.v
1
answer
0.5g KCl was dissolved in 100g water and the solution originally at $20^{\large\circ}C$,froze at $-0.24^{\large\circ}C$.Calculate the percentage ionization of salt.$(K_f$ per 1000g of water =1.86K)
cbse
class12
chemistry
ch2
solutions
sec-c
easy
additionalproblem
q45
asked
Aug 8, 2014
by
sreemathi.v
1
answer
What concentration of nitrogen should be present in a glass of water at room temperature.Assume a temperature of $25^{\large\circ}C$,a total pressure of atmosphere and mole fraction of nitrogen in air of 0.78.[$K_H$ for nitrogen =$8.42\times 10^{-7}$M/mm Hg]
cbse
class12
chemistry
ch2
solutions
sec-b
medium
additionalproblem
q44
asked
Aug 8, 2014
by
sreemathi.v
1
answer
100 mg of a protein is dissolved in enough water to make 10.0mL of a solution.If this solution has an osmotic pressure of 13.3 mm Hg at $25^{\large\circ}C$.What is the molar mass of protein.
cbse
class12
chemistry
ch2
solutions
sec-b
easy
additionalproblem
q43
asked
Aug 8, 2014
by
sreemathi.v
1
answer
Calculate the molarity and molality of a 15% solutions (by weight) of sulphuric acid density $1.020g cm^{-3}$.(Atomic masses H=10=16S=32 amu)
cbse
class12
chemistry
ch2
solutions
sec-b
medium
additionalproblem
q42
asked
Aug 8, 2014
by
sreemathi.v
1
answer
Calculate the radius of molybdenum atom if the element crystallizes as body- centred cubic crystals. Given: Density of $Mo=10.3\;g\;cm^{-3}$ and molar mass of $Mo= 95.94 \;g\;mol^{-1}$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
A solution containing,8g of a substance in 100g of diethyl ether boils at $36.86^{\large\circ}C$,whereas pure ether boils at $35.60^{\large\circ}C$.Determine the molecular mass of the solute.(For ether $K_b=2.02kg mol^{-1})$
cbse
class12
chemistry
ch2
solutions
sec-b
easy
additionalproblem
q41
asked
Aug 8, 2014
by
sreemathi.v
1
answer
The van't Hoff factor of the compound $K_3Fe(CN)_6$ in dilute solution is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
vant-hoff-factor
colligative-properties
vant-hoff
easy
asked
Aug 8, 2014
by
meena.p
2
answers
A 6.90 M solution of KOH in water contains 30% by mass of KOH.Calculate the density of the KOH solution ?[Molar mass of KOH=$56g mol^{-1}$]
cbse
class12
chemistry
ch2
solutions
sec-b
medium
additionalproblem
q40
asked
Aug 8, 2014
by
sreemathi.v
1
answer
The Van't Hoff factor of acetic acid in water will be
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
vant-hoff-factor
colligative-properties
vant-hoff
easy
asked
Aug 8, 2014
by
meena.p
1
answer
Urea forms an ideal solution in water .Determine the vapour pressure of aqueous solution containing 10% by mass of urea of $40^{\large\circ}C$.(Vapour pressure of water,at $40^{\large\circ}C$=55.3 mm Hg)
cbse
class12
chemistry
ch2
solutions
sec-b
easy
additionalproblem
q39
asked
Aug 8, 2014
by
sreemathi.v
1
answer
The van't hoff factor for $0.1\; molal\;Ba(NO_3)_2$ solution is $ 2.74$. Its degree of dissociation is
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
vant-hoff-factor
colligative-properties
vant-hoff
easy
asked
Aug 8, 2014
by
meena.p
1
answer
Calculate the freezing point of a solution containing 0.520g glucose $(C_6H_{12}O_6)$ dissolved in 80.20g of water.For water $K_f=1.86Kkg mol^{-1}$
cbse
class12
chemistry
ch2
solutions
sec-a
medium
additionalproblem
q38
asked
Aug 8, 2014
by
sreemathi.v
1
answer
A 0.2 percent aqueous solution of a non-volatile solute exerts vapour pressure of $1.004$ bar at $100^{\large\circ}$C.What is the molar mass of the solute?
cbse
class12
chemistry
ch2
solutions
sec-a
difficult
additionalproblem
q37
asked
Aug 8, 2014
by
sreemathi.v
1
answer
Which of following electrolytes would have the same van't hoff factor as that of potassium ferricyanide ?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
vant-hoff-factor
colligative-properties
vant-hoff
easy
asked
Aug 8, 2014
by
meena.p
1
answer
The Van't Hoff factor of benzoic acid in benzene is found to be
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
vant-hoff-factor
colligative-properties
vant-hoff
easy
asked
Aug 8, 2014
by
meena.p
1
answer
Ethylene glycol (molar mass =$62g mol^{-1})$ is a common automobile antifreeze.Calculate the freezing point of a solution containing 12.4 of this substance in 100g of water would it be advisable to keep this substance in the car radiator during summer?
cbse
class12
chemistry
ch2
solutions
sec-b
easy
additionalproblem
q36
asked
Aug 8, 2014
by
sreemathi.v
1
answer
The degree of dissociation $(\alpha)$ of a weak electrolyte $A_xB_y$ is related to van't Hoff factor (i) by the expression
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
vant-hoff-factor
colligative-properties
vant-hoff
easy
asked
Aug 8, 2014
by
meena.p
1
answer
The freezing point of 0.02 mole fraction solution of acetic acid in benzene is 277.4K.Assuming molality equal to molarity,calculate $K_c$ for the equilibrium reaction $2CH_3COOH\;\;\leftrightharpoons\;\;(CH_3COOH)_2$.Given : $T_f$(benzene) =$278.4$ and $K_f$(benzene)=5.0K kg $mol^{-1}$.
cbse
class12
chemistry
ch2
solutions
sec-c
medium
additionalproblem
q35
asked
Aug 8, 2014
by
sreemathi.v
1
answer
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