Recent questions tagged solutions

How much ethyl alcohol must be added to 1 litre of water so that the solution will freeze at $14^{\circ}F$ ? ($K_f$ for water = $1.86^{\circ}C/mol)$

asked Dec 29, 2016 by sharmaaparna1

1 answer

Out of (a) 200 ml of 2 M NaCl Soln and (b) 200 ml of 1 M glucose Soln. which one has higher osmotic pressure ?

asked Dec 29, 2016 by sharmaaparna1

1 answer

Purification of drinking water is a big problem. In your locality, vendors of various companies are promoting RO units for purification of water for domestic use irrespective of whether it is required or not. Answer the following questions: (i) What is the meaning of RO? (ii) Would you recomend the installation of RO units in all the areas? (iii) Support your views with reasons.

asked Nov 28, 2016 by meena.p

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When fruits and vegetables that have dried are placed in water , they slowly swell and return to the original form . Explain why ? Would a temperature increase accelerate the process explain .

asked Nov 24, 2016 by meena.p

1 answer

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

asked Nov 24, 2016 by meena.p

1 answer

$18\;g$ of glucose , $C_6H_{12}$ is dissolved in $1\;kg$ of water in a sauce pan. At what temperature will water boil at $1.013$ bar ? $K_b$ for water is $0.52\;k\;kg\;mol^{-1}$

asked Nov 21, 2016 by meena.p

1 answer

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

1 answer

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

1 answer

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

1 answer

What causes Brownian movement in a colloidal solution ?

asked Nov 8, 2016 by meena.p

1 answer

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

asked Nov 4, 2016 by meena.p

1 answer

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

1 answer

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

1 answer

$CCl_4$ 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

1 answer

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

1 answer

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

1 answer

$70\;ml$ of $2$ molal $HNO_3$ solution whose density is $1.126\;g/ml$ is mixed with $30\; ml$ of $2$ molal $NaOH$ solution whose density is $1.08\; g/ml$ and some water is also added so that concentration of $H^{+}$ ion in resulting solution becomes $0.2\; M.$ How many mili moles of $H^{+}$ will be present in final solution

asked Jan 18, 2016 by meena.p

1 answer

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

1 answer

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

1 answer

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

asked Sep 16, 2015 by meena.p

1 answer

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

1 answer

$18\;g$ 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

1 answer

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

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