Recent questions in Chemistry

Which of the following facts regarding the movements of cations in the solution is correct?

asked Jul 21, 2014 by sreemathi.v

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Which of the following statements is correct?

asked Jul 18, 2014 by sreemathi.v

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Which of the following statements is correct?

asked Jul 18, 2014 by sreemathi.v

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Which of the following statements is correct for a galvanic cell,written in a cell diagram?

asked Jul 18, 2014 by sreemathi.v

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Which of the following statements is correct?

asked Jul 18, 2014 by sreemathi.v

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When a galvanic cell is written in a cell diagram then

asked Jul 18, 2014 by sreemathi.v

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The standard reduction potentials, $E^{\large\circ}$ ,for the half reactions are $Zn^{2+}+2e^-=Zn,E^{\large\circ}=-0.76V$ and $Fe^{2+}+2e^-=Fe,E^{\large\circ}=-0.41V$ .The emf of the cell involving the reaction $Fe^{2+}+zn\rightarrow Zn^{2+}+Fe$ is

asked Jul 18, 2014 by sreemathi.v

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The reaction $\large\frac{1}{2}$ $H_2(g)+AgCl(s)=H^+(aq)+Cl^-(aq)+Ag(s)$ occurs in the galvanic cell

asked Jul 18, 2014 by sreemathi.v

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The standard potentials at 298K for the following half reactions are given against each : $\begin{array}{1 1}Zn^{2+}(aq)+2e^-\leftrightharpoons Zn(s)\quad-0.762V&2H^+(aq)+2e^-\leftrightharpoons Cr(s)\quad 0.000V\\Cr^{3+}(aq)+3e^-\leftrightharpoons Cr(s)\quad -0.740V&Fe^{3+}(aq)+2e^-\leftrightharpoons Fe^{2+}(aq)\quad 0.770V\end{array}$ .Which is the strongest reducing agent?

asked Jul 18, 2014 by sreemathi.v

1 answer

Equivalent conductivity of $Fe_2(SO_4)_3$ is related to molar conductivity by the expression

asked Jul 18, 2014 by sreemathi.v

1 answer

Which of the following expressions is correct?

asked Jul 18, 2014 by sreemathi.v

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Molar conductivity of $Fe_2(SO_4)_3$ is given by

asked Jul 18, 2014 by sreemathi.v

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Equivalent conductivity of $Fe_2(SO_4)_3$ is given by

asked Jul 18, 2014 by sreemathi.v

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The equilibrium constant of acetic acid in an aqueous solution of concentration $c$ is given by

asked Jul 18, 2014 by sreemathi.v

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The degree of dissociation of a weak electrolyte is given by

asked Jul 18, 2014 by sreemathi.v

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Which of the following ion is expected to have highest value of molar conductivity at infinite dilution in an aqueous solution?

asked Jul 18, 2014 by sreemathi.v

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Which of the following ion is expected to have least value of molar conductivity at infinite dilution in an aqueous solution?

asked Jul 18, 2014 by sreemathi.v

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Which of the following ion is expected to have highest value of molar conductivity at infinite dilution in an aqueous solution?

asked Jul 18, 2014 by sreemathi.v

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For a dilute solution of a strong electrolyte,the variation of molar conductivity with concentration is given by

asked Jul 18, 2014 by sreemathi.v

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Molar conductivity is defined as (where $k$ is the conductivity and $c$ is the molar concentration of electrolyte.)

asked Jul 18, 2014 by sreemathi.v

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Molar conductivity is defined as (where $k$ is the conductivity, $G$ is conductance and $l$ is the distance between two electrodes of conductivity cell)

asked Jul 18, 2014 by sreemathi.v

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Molar conductivity is defined as (where $k$ is the conductivity, $G$ is conductance, $l$ is the distance between two electrodes of conductivity cell and $V$ is the volume of solution containing 1 mol of electrolyte)

asked Jul 18, 2014 by sreemathi.v

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The cell constant of a conductivity cell is defined as

asked Jul 18, 2014 by sreemathi.v

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The unit of resistivity is

asked Jul 18, 2014 by sreemathi.v

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According to Ohm's law,(where the various symbols have their usual meanings)

asked Jul 18, 2014 by sreemathi.v

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The unit of molar conductivity is

asked Jul 18, 2014 by sreemathi.v

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Which of the following is correct?

asked Jul 18, 2014 by sreemathi.v

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If one molecule of an electrolyte dissociates to produce $v_+$ number of cations $A^{z+}$ and $v_-$ number of anions $B^{z-}$ ,then the relation between molar conductivity $(\Lambda_m)$ and equivalent conductivity $(\Lambda_{eq})$ is

asked Jul 18, 2014 by sreemathi.v

1 answer

Which of the following is not correct?

asked Jul 18, 2014 by sreemathi.v

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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

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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

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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

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

asked Jul 18, 2014 by sreemathi.v

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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

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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

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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

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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

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

asked Jul 17, 2014 by sreemathi.v

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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

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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

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

asked Jul 17, 2014 by sreemathi.v

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

asked Jul 17, 2014 by sreemathi.v

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

asked Jul 17, 2014 by sreemathi.v

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

asked Jul 17, 2014 by sreemathi.v

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