Recent questions in Chemistry

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

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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

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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

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The freezing point of equimolal aqueous solutions will be highest for

asked Jul 17, 2014 by sreemathi.v

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

asked Jul 17, 2014 by sreemathi.v

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

asked Jul 17, 2014 by sreemathi.v

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

asked Jul 17, 2014 by sreemathi.v

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For a dilute solution,Raoult's law states that

asked Jul 17, 2014 by sreemathi.v

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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

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A metal crystallises into two cubic phases,face centred cubic (FCC) and body centred cubic (BCC),whose unit cell length are 3.5 and $3.0A^{\large\circ}$,respectively.Calculate the ratio of densities of FCC and BCC.

asked Jul 17, 2014 by sreemathi.v

1 answer

Chromium metal crystallises witha body-centred cubic lattice.The length of the unit cell edge is found to be 287pm.Calculate the atomic radius.What would be the density of chromium in $g/cm^3$?

asked Jul 17, 2014 by sreemathi.v

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A unit cell of sodium chloride has four formula units.The edge length of the unit cell is 0.564nm.What is the density of sodium chloride?

asked Jul 17, 2014 by sreemathi.v

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A sample of wustite $Fe_xO$ contains one Fe(III) for every three Fe(II).Calculate the value of $x$

asked Jul 16, 2014 by sreemathi.v

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LiI 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.

asked Jul 16, 2014 by sreemathi.v

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$KCl$ crystallizes in the same type of lattice as does $NaCl$.Givn that $\large\frac{r_{Na^+}}{r_{Cl^-}}$$=0.5$ and $\large\frac{r_{Na^+}}{r_{K^+}}$$=0.7$.Calculate the ratio of the side unit cell for $KCl$ to that for $NaCl$,and the ratio of density of $NaCl$ to that of $KCl$

asked Jul 16, 2014 by sreemathi.v

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If the radius of $Cs^+$ is 169pm and that of $Cl^-$ is 181pm,predict the structure of CsCl.What is the coordination number of $Cs^+$ ion?

asked Jul 16, 2014 by sreemathi.v

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A solid $A^+B^-$ has an NaCl type closest packed structure.If the radius of the anion is 250pm,what is the radius of the cation?

asked Jul 16, 2014 by sreemathi.v

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The atomic radius of strontium is 215pm and it crystallizes with a cubical closest-packed structure.Calculate the density of strontium.The molar mass of strontium is $87.6gmol^{-1}$.

asked Jul 16, 2014 by sreemathi.v

1 answer

Caesium chloride may be considered to form interpenetrating simple primitive cubic crystals.The edge length of unit cell is 412pm.Determine the ionic radius of $Cs^+$ if the ionic radius of $Cl^-$ is 181pm.Given :M(Cs)=$133gmol^{-1}$

asked Jul 16, 2014 by sreemathi.v

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Caesium chloride may be considered to form interpenetrating simple primitive cubic crystals.The edge length of unit cell is 412pm.Determine the density of CsCl.Given :M(Cs)=$133gmol^{-1}$

asked Jul 16, 2014 by sreemathi.v

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The edge length of a cubic unit cell of metallic calcium is 556pm.If the density of calcium is $1.54gcm^{-3}$ and its molar mass is $40.08gmol^{-1}$,calculate the radius of calcium atom

asked Jul 16, 2014 by sreemathi.v

1 answer