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Recent questions tagged ch2

The vapour-pressure lowering of a solvent is proportional to

asked Jul 22, 2014 by sreemathi.v

1 answer

An azeotropic solution of two liquids has a boiling point higher than either of the boiling points of the two liquids when it

asked Jul 22, 2014 by sreemathi.v

1 answer

Which of the following is true?

asked Jul 22, 2014 by sreemathi.v

1 answer

The volume required to prepare 2.0L of 3.0M $H_2SO_4$ solution from 96% $H_2SO_4$ solution (density $1.83gmL^{-1}$) is

asked Jul 22, 2014 by sreemathi.v

1 answer

An aqueous solution of HCl has 2% mass of HCl and a density of $1.02gcm^{-3}$ .The numerical values of molarity and molality,respectively, are

asked Jul 22, 2014 by sreemathi.v

1 answer

The volume of 96% $H_2SO_4$ (density $1.83gmL^{-1}$) required to prepare 2.0L of 3.0M $H_2SO_4$ solution is

asked Jul 22, 2014 by sreemathi.v

1 answer

What mass of ethanol be added to 1.0Kg water to have the mole fraction of ethanol equal to 0.20?

asked Jul 22, 2014 by sreemathi.v

1 answer

A molal solution is one that contains one mole of a solute in

asked Jul 22, 2014 by sreemathi.v

1 answer

The density of a 10.0% by mass KCl solution in water is $1.06gcm^{-3}$,its molarity is

asked Jul 22, 2014 by sreemathi.v

1 answer

The molecular weight of benzoic acid in benzene as determined by depression in freezing point method corresponds to

asked Jul 18, 2014 by sreemathi.v

1 answer

The degree of dissociation $(\alpha)$ of a weak electrolyte $A_xB_x$ is related to Van't hoff factor (i) by the experiment

asked Jul 18, 2014 by sreemathi.v

1 answer

A solution contains 0.1 mol of acetamide in 1 L of glacial acetic acid.When the solution is cooled the first crystals that appeared at the freezing point contain the molecules of

asked Jul 18, 2014 by sreemathi.v

1 answer

Which of the following colligative properties can provide molar mass of proteins (or polymers or colloids) with greater precision?

asked Jul 18, 2014 by sreemathi.v

1 answer

A semipermeable membrane used in the measurement of osmotic pressure of a solution allows the passage of

asked Jul 18, 2014 by sreemathi.v

1 answer

Raoult's law is obeyed by each constituent of a binary liquid solution when

asked Jul 18, 2014 by sreemathi.v

1 answer

A binary liquid solution of chloroform and acetone is prepared.Which of the following statements correctly represents the behaviour of this liquid solution?

asked Jul 17, 2014 by sreemathi.v

1 answer

A binary liquid solution of n-heptane and ethyl alcohol is prepared.Which of the following statements correctly represents the behaviour of this liquid solution?

asked Jul 17, 2014 by sreemathi.v

1 answer

For a dilute solution containing a nonvolatile solute,the molar mass of solute evaluated from the osmotic pressure measurement is given as

asked Jul 17, 2014 by sreemathi.v

1 answer

For a dilute solution containing a nonvolatile solute,the molar mass of solute evaluated from the elevation of boiling point is given by the expression

asked Jul 17, 2014 by sreemathi.v

1 answer

For a dilute solution containing a nonvolatile solute,which of the following expressions correctly represents the molar mass of solute ?

asked Jul 17, 2014 by sreemathi.v

1 answer

For an ideal solution containing a nonvolatile solute,which of the following expressions is correctly represented?

asked Jul 17, 2014 by sreemathi.v

1 answer

For an ideal binary liquid solution with $p_A^* > p_B^*$,which of the following relations between $x_A$ (mole fraction of A in liquid phase) and $y_A$ (mole fraction of A in vapour phase) is correctly represented?

asked Jul 17, 2014 by sreemathi.v

1 answer

For an ideal solution containing a nonvolatile solute,which of the following expressions is correctly represented?

asked Jul 17, 2014 by sreemathi.v

1 answer

For an ideal solution containing a nonvolatile solute,which of the following expressions is correctly represented?

asked Jul 17, 2014 by sreemathi.v

1 answer

For an ideal solution containing a nonvolatile solute,which of the following expressions represents the vapour pressure of the solution?(where the subscripts 1 and 2 stand for solvent and solute, respectively)

asked Jul 17, 2014 by sreemathi.v

1 answer

The plot of $1/x_A$ versus $1/y_A$ (where $x_A$ and $y_A$ are the mole fractions of A in liquid and vapour phases,respectively) is linear with slope and intercept respectively are given as

asked Jul 17, 2014 by sreemathi.v

1 answer

Which of the following plots correctly represents the behaviour of an ideal binary liquid solution?

asked Jul 17, 2014 by sreemathi.v

1 answer

Which of the following plots represents the behaviour of an ideal binary liquid solution ?

asked Jul 17, 2014 by sreemathi.v

1 answer

Which of the following plots does not represent the behaviour of an ideal binary liquid solution?

asked Jul 17, 2014 by sreemathi.v

1 answer

For a binary ideal liquid solution,the total pressure of the solution is given as

asked Jul 17, 2014 by sreemathi.v

1 answer

The expression relating mole fraction of solute $(x_2)$ and molarity $(M)$ of the solution is (where $\rho$ is the density of solution,$M_1$ and $M_2$ are the molar masses of solvent and solute,respectively)

asked Jul 17, 2014 by sreemathi.v

1 answer

The expression relating molality (m) and mole fraction of solute $(x_2)$ in a solution is (where $M_1$ is the molar mass of solvent)

asked Jul 17, 2014 by sreemathi.v

1 answer

The expression relating molarity (M) and molality (m) of a solution is (where $\rho$ is the density of solution and $M_2$ is the molar mass of solute)

asked Jul 17, 2014 by sreemathi.v

1 answer

The freezing point of equimolal aqueous solutions will be highest for

asked Jul 17, 2014 by sreemathi.v

1 answer

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

asked Jul 17, 2014 by sreemathi.v

1 answer

In which mode of expression the concentration of a solution remains independent of temperature ?

asked Jul 17, 2014 by sreemathi.v

1 answer

When mercuric iodide is added to an aqueous solution of pottassium iodide the

asked Jul 17, 2014 by sreemathi.v

1 answer

For a dilute solution,Raoult's law states that

asked Jul 17, 2014 by sreemathi.v

1 answer

An azeotropic solution of two liquid s has a boiling point lower than either of them when it

asked Jul 17, 2014 by sreemathi.v

1 answer

The expression relating molarity (M) and molality (m) or a solution is:

asked Jul 15, 2014 by balaji.thirumalai

1 answer

Find the value of $g$ (in $m\;s^{-2}$) up to approximate significant figures stating the uncertainty in the value of $g$, given the following information:

asked Jul 12, 2014 by balaji.thirumalai

1 answer

In the following experiment, find the value of the density in g cm$^{-3}$ up to the appropriate significant figures, stating the uncertainty in the value of the density.

asked Jul 12, 2014 by balaji.thirumalai

1 answer

Find the total mass up to the appropriate significant figures of four objects that have the following masses: 1.54 Kg, 3.668 Kg, 5.1278 Kg and 2.5 Kg

asked Jul 12, 2014 by balaji.thirumalai

1 answer

What is the area of the cross section of the wire up to approximate significant figures if the radius of a uniform wire is 0.021 cms. The value of $\pi$ is given to be 3.142.

asked Jul 12, 2014 by balaji.thirumalai

1 answer

A man runs 100.5 m in 10.3 seconds. What is his average speed up to approximate significant figures?

asked Jul 12, 2014 by balaji.thirumalai

1 answer

A bee of mass 0.000087 Kg sits on a flower of mass 0.0123 Kg. What is the total mass supported by the stem of the flower up to the approximate significant figures?

asked Jul 12, 2014 by balaji.thirumalai

1 answer

The dimensional method cannot be used to obtain the dependence of which of the following?

asked Jul 12, 2014 by balaji.thirumalai

1 answer

The radius of sphere is measured to be $(2.1 \pm 0.5)$ cms. What is its surface area with error limits?

asked Jul 11, 2014 by balaji.thirumalai

1 answer

The velocity v of a particle at time t is given by $v=a+ bt+\large\frac{c}{t+d}$ where a, b, c and d are constants. The dimensions of a, b c and d are respectively

asked Jul 11, 2014 by balaji.thirumalai

1 answer

Given that the pressure $p$ at a depth $h$ below the surface of a fluid of density $\rho$ is given by $p = \rho gh$, where $g$ is the acceleration due to gravity, which of the following represent the dimensions of pressure?

asked Jul 11, 2014 by balaji.thirumalai

1 answer

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