Recent questions tagged composition-of-a-solution

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

asked Aug 11, 2014 by meena.p

1 answer

The composition of a sample of wiistite is $Fe_{0.93} O_{1.00-}$. What percentage of the ion is present in the form of $Fe(III)?$

asked Aug 11, 2014 by meena.p

1 answer

Calculate the percentage of void volume in the body centred

asked Aug 11, 2014 by meena.p

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Calculate the percentage of void volume in the primitive

asked Aug 11, 2014 by meena.p

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Lil 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 Aug 11, 2014 by meena.p

1 answer

KCl crystallizes in the same type of lattice as does $NaCl$ . Given that $\large\frac{r_{Na^{+}}}{r_{cl^{-}}}$$=0.5$ and $\large\frac{r_{Na^{+}}}{r_{K^{+}}}$$=0.5$ calculate the ratio of density of NaCl to that KCl

asked Aug 11, 2014 by meena.p

1 answer

KCl crystallizes in the same type of lattice as does $NaCl$ . Given that $\large\frac{r_{Na^{+}}}{r_{cl^{-}}}$$=0.5$ and $\large\frac{r_{Na^{+}}}{r_{K^{+}}}$$=0.5$ calcute the ratio of the unit cell for $KCl$ to that for $NaCl$

asked Aug 11, 2014 by meena.p

1 answer

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

asked Aug 11, 2014 by meena.p

1 answer

A solid $A^{+}B^{-}$ has an $NaCl$ type closet packed structure . If the radius of the anion is $250\;pm$ What is the radius of the cation ?

asked Aug 8, 2014 by meena.p

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

asked Aug 8, 2014 by meena.p

1 answer

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

asked Aug 8, 2014 by meena.p

1 answer

Caesium chloride may be considered to form interpenetrating simple primitive cubic crystals. The edge length of unit cell is $412\;pm$. Determine the density of $CsCl$

asked Aug 8, 2014 by meena.p

1 answer

The edge length of cubic unit cell of metallic calcium is $556\;pm$ If the density of calcium is $1.54 \;g\;cm^{-3}$ and its molar mass is $40.08];g\;mol^{-1}$ calculate the radius of calcium atom.

asked Aug 8, 2014 by meena.p

1 answer

Calculate the radius of molybdenum atom if the element crystallizes as body- centred cubic crystals. Given: Density of $Mo=10.3\;g\;cm^{-3}$ and molar mass of $Mo= 95.94 \;g\;mol^{-1}$

asked Aug 8, 2014 by meena.p

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

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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

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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

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

asked Jul 22, 2014 by sreemathi.v

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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 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

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

asked Jul 15, 2014 by balaji.thirumalai

1 answer

At 298K temperature ,the Henry constants for $Ar,CO_2,CH_4$ and $O_2$ are 40 kbar,1.6 kbar,0.41 kbar and 34 kbar respectively.Which of the following show maximum solubility in water at a given pressure?

asked Feb 17, 2014 by sreemathi.v

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How much $CaCO_3$ is present in 100ml of 1000ppm $CaCO_3$ solution?

asked Feb 14, 2014 by sreemathi.v

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1000 mL of aqueous solutions of $CaCO_3$ contains 1 gm of carbonate,concentration of the solution is

asked Feb 14, 2014 by sreemathi.v

1 answer

At 293K temperature,the Henry's Law constants for $He,H_2,N_2$ and $O_2$ are 144 kbar,69 kbar,76 kbr and 34.86 kbar respectively. Which of the following show maximum solubility in water at a given pressure

asked Feb 14, 2014 by sreemathi.v

1 answer

Which of the following statements about Raoult's Law is/are correct?

asked Feb 14, 2014 by sreemathi.v

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Mole fraction of the benzene in the vapour phase which is in equilibrium with a solution of benzene $(p^0=120torr)$ and toluene$(p^0=80torr)$ having 4.0mole of benzene and 6 mole of toluene in solution.

asked Feb 14, 2014 by sreemathi.v

1 answer

Mole fraction of the benzene in the vapour phase which is in equilibrium with a solution of benzene $(p^0=120torr)$ and toluene$(p^0=80torr)$ having 2.0mole of each is

asked Feb 14, 2014 by sreemathi.v

1 answer