Recent questions tagged ch-2

Which colligative properly is preferred for the molar mass determination of macro molecules ? why ?

asked Nov 24, 2016 by meena.p

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How does sprinkling of salt help in clearing the snow covered roads in hilly areas? Explain the phenomenon involved in the process.

asked Nov 21, 2016 by meena.p

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A and B liquids on mixing produce a warm solution . Which type of deviation from Raoult's law is there ?

asked Nov 14, 2016 by meena.p

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Calculate the amount of KCl which must be added to $1\;kg$ of water so that the freezing point is depressed by $2\;k$? ($k_f$ for water = $1.86 \;K \;mol^{-1}$)

asked Nov 10, 2016 by meena.p

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Prove that $ \cos^{-1}x = 2 \sin^{-1} \sqrt{\frac{1-x}{2}}$

asked Nov 10, 2016 by priyanka.c

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What causes Brownian movement in a colloidal solution ?

asked Nov 8, 2016 by meena.p

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Explain why does conductivity of germanium crystals increase on doping with gallium

asked Nov 4, 2016 by meena.p

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When $1 \;mol$ of $NaCl$ is added to 1 litre of water , the boiling point of water increases on other hand, addition of 1mol of methyl alcohol to one litre of water decreases the boiling point of water . Explain why does this happen .

asked Nov 4, 2016 by meena.p

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If the solubility product of $CuS$ is $ 6 \times 10^{-6}$ calculate the maximum molarity of $CuS$ is aqueous solution

asked Nov 2, 2016 by meena.p

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$CCl_4$ and water are immisuble whereas ethanol and water are miscible in all proportions. Correlate this behavior with molecular structure of these compounds.

asked Nov 1, 2016 by meena.p

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Why a person suffering from high blood pressure is advised to take minimum quantity of common salt

asked Oct 26, 2016 by meena.p

1 answer

Why is osmotic pressure of $1\;M\;KCl$ higher than $1\;M$ urea solution ?

asked Oct 26, 2016 by meena.p

1 answer

Differentiate between morality and molality of a solution . Explain how molality value of a solution can be converted into its molality

asked Oct 21, 2016 by meena.p

1 answer

Why does a solution of ethanol and cyclohexane show positive deviation from Raoult's law?

asked Oct 21, 2016 by meena.p

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Give reasons for the following observation : (a) Colloids Stabilize due to Brownian movement . (b) Cornell's smoke precipitation is fixed at the mouth of chimney used in factories. (c) Colloidal gold is used for intramuscular injection .

asked Oct 19, 2016 by meena.p

1 answer

How is the present of $SO_2$ detected ?

asked Oct 18, 2016 by meena.p

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Mole fraction of $CH_3H_5(OH_3)$ in a solution of $36\;g$ of $ H_2O$ and $46\;g$ of glycerin is

asked Sep 16, 2015 by meena.p

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How much volume of $3.0\;MH_2SO_4$ is required for the preparation of $1.0$ lit. of $1.0 \;M$ solution

asked Sep 16, 2015 by meena.p

1 answer

Van't Hoff's factor (i)

asked Sep 16, 2015 by meena.p

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Which one of the following solutions will have the lowest boiling point ?

asked Sep 16, 2015 by meena.p

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The lowering of VP of $0.1\;m$ aqueous solution of $Nacl, Caso_4$ and $ K_2So_4$

asked Sep 16, 2015 by meena.p

1 answer

Benzonic acid dissolved in benzene show a molecular mass of

asked Sep 16, 2015 by meena.p

1 answer

One mole of sugar is dissolved in two moles of water. the VP of the solution relative to that of pure water is

asked Sep 16, 2015 by meena.p

1 answer

The dispression in freezing point for IM urea, 1m glucose and 1m Nacl are in the ratio.

asked Sep 16, 2015 by meena.p

1 answer

Which has minimum osmotic pressure ?

asked Sep 16, 2015 by meena.p

1 answer

The density of $2.05\;M$ acetic acid in water is $1.02\;glcc$. The molality of solution is

asked Sep 16, 2015 by meena.p

1 answer

Equal volumes of $M/20$ glucose solution and $M/20$ sucrose solution are mixed the mixture will have

asked Sep 16, 2015 by meena.p

1 answer

A $0.6 \%$ urea solution would be isotonic with

asked Sep 16, 2015 by meena.p

1 answer

Osmotic pressure of one molar solutions of glucose, $Nacl$ and $Alcl_3$ will be in the order

asked Sep 16, 2015 by meena.p

1 answer

The exact mathematical expression of Raaill's law is

asked Sep 16, 2015 by meena.p

1 answer

A mixture of benzene and toluence forms

asked Sep 16, 2015 by meena.p

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$18\;g$ glucose $(C_6H_{12} O_6)$ is added to $178.2g$ of $H_20 $ . The vapor pressure of water for this aquoues solution at $100^{\circ}$ is :

asked Sep 15, 2015 by meena.p

1 answer

Which among the following gas will greatly deviate from Henry's law in water ?

asked Sep 15, 2015 by meena.p

1 answer

Camphor is of ten used in molecular mass determination because

asked Sep 15, 2015 by meena.p

1 answer

The highest temperature at which vapour pressure of a liquid can be measured is

asked Sep 15, 2015 by meena.p

1 answer

The ratio of the value of colligative properly for KCL solution to that of sugar solution at the same concentration is nearly

asked Sep 15, 2015 by meena.p

1 answer

The osmotic pressure of equimolar solutions of $Bacl_2,Nacl $ and glucose will be in order

asked Sep 15, 2015 by meena.p

1 answer

Which inorganic precipitate acts as semipermeable membrane ?

asked Sep 15, 2015 by meena.p

1 answer

Which of the following is a colligative property?

asked Sep 15, 2015 by meena.p

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A solution of l moral concentration of a solute will have maximum boiling point elevation when the solvent is

asked Sep 15, 2015 by meena.p

1 answer

Benzonic acid dissolved in benzene will show a molecular mass of

asked Sep 15, 2015 by meena.p

1 answer

Which of the following 0.1M aqueous solutions will have the lowest freezing point ?

asked Sep 15, 2015 by meena.p

1 answer

An aqueous solution as 1 moral is k1. Which change will course the vapour pressure of the solution to increase?

asked Sep 15, 2015 by meena.p

1 answer

An aqueous of methanol in water has vapor pressure :

asked Sep 15, 2015 by meena.p

2 answers

A 0.2 moral solution of KCL freezes at $-0.68^{\circ}C$. If kf for $H_20$ is $1.86 $, the degree of dissolution of KCl is

asked Sep 15, 2015 by meena.p

1 answer

$0.002$ molar solution of Nacl having degree of dissociation of $90\%$ at $27^{\circ}C$ has osmotic pressures equal to :

asked Sep 15, 2015 by meena.p

1 answer

Which has minimum or osmotic pressure ?

asked Sep 15, 2015 by meena.p

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Volume of water needed to mix with 10 ml of $NHCl$ to get $0.1\;N\; HCl$ is

asked Sep 15, 2015 by meena.p

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Which of the following can be measured by the Ostwald - walker dynamic method . ?

asked Sep 15, 2015 by meena.p

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Which one is correct ?

asked Sep 15, 2015 by meena.p

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