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Recent questions tagged physical-chemistry

If $0.50$ mol of $Bacl_2$ is mixed with $0.20$ mol of $Na_3PO_4$ , the maximum number of moles of $Ba_3(PO_4)_2$ that can be formed is

asked Mar 21, 2014 by meena.p

1 answer

A gaseous mixture contains oxygen and nitrogen in the ratio of $1:4$ by weight . Therefore , the ratio of their number of molecules is

asked Mar 21, 2014 by meena.p

1 answer

In the standardization of $Nas_2S_2O_3$ using $K_2Cr_2O_7$ by iodometry , the equivalent weight of $K_2Cr_2O_7$ is

asked Mar 21, 2014 by meena.p

1 answer

Consider a titration of potassium dichromate solution with acidified Mohr's salt solution using diphenylamine as indicator. The number of moles of Mohr's salt required per mole of dichromate is

asked Mar 21, 2014 by meena.p

1 answer

How many moles of electron weight one kilogram ?

asked Mar 21, 2014 by meena.p

1 answer

The number of moles of $KMnO_4$ that will be needed to react completely with one mole of ferrous oxalate in acidic solution is

asked Mar 21, 2014 by meena.p

1 answer

$2.76\;g$ of silver carbonate on being strongly heated yields a residue weighing.

asked Mar 21, 2014 by meena.p

1 answer

Which has the maximum number of atoms?

asked Mar 21, 2014 by meena.p

1 answer

Given that the abundance of isotopes $^{54}Fe, ^{56}Fe$ and $^{56}Fe$ are $5 \%, 90 \%$ and $5 \%$ respectively, the atomic mass of $Fe$ is

asked Mar 21, 2014 by meena.p

1 answer

The largest number of molecules is in

asked Mar 21, 2014 by meena.p

1 answer

An aqueous solution of $6.3\;g$ oxalic acid dihydrate is made up to $250\;ml$ . The volume of $0.1\;N\; NaOH$ required to completely neutralize 10 ml of this solution is

asked Mar 21, 2014 by meena.p

1 answer

The normality of $0.3\;M$ phosphorous acid $(H_3P0_3) $ is

asked Mar 21, 2014 by meena.p

1 answer

When the same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide evolved is

asked Mar 21, 2014 by meena.p

1 answer

The total number of electrons in one molecule of carbon dioxide is

asked Mar 21, 2014 by meena.p

1 answer

The equivalent weight of $ MnSO_4$ is half its molecular weight when it is converted to

asked Mar 21, 2014 by meena.p

1 answer

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

asked Mar 20, 2014 by meena.p

1 answer

The element “M” forms the chloride $\text{MCl}_4$. If the chloride contains 75 % chlorine by mass, calculate the molar mass of element “M”.

asked Mar 15, 2014 by balaji.thirumalai

1 answer

Match the following column-I and column-II

asked Mar 11, 2014 by sreemathi.v

1 answer

Match the following column-I and column-II

asked Mar 11, 2014 by sreemathi.v

1 answer

Match the following column-I and column-II

asked Mar 10, 2014 by sreemathi.v

1 answer

According to molecular orbital theory ,the magnetic characteristics of $F_2^{2+}$ and $Br_2^{2+}$ respectively are

asked Mar 10, 2014 by sreemathi.v

1 answer

Which one of the following is the incorrect matching?

asked Mar 10, 2014 by sreemathi.v

1 answer

Which of the following is the correct order for increasing the Lewis acid character?

asked Mar 10, 2014 by sreemathi.v

1 answer

Which one of the following molecule is more stable?

asked Mar 10, 2014 by sreemathi.v

1 answer

According to molecular orbital theory,which of the following statement is not correct?

asked Mar 10, 2014 by sreemathi.v

1 answer

Which one of the following order is correct for the increasing thermal stabilities of $K_2CO_3,MgCO_3,CaCO_3$ and $BeCO_3$?

asked Mar 10, 2014 by sreemathi.v

1 answer

Polarisation of electrons in acrolein may be written as :

asked Mar 10, 2014 by sreemathi.v

1 answer

Which of the following compound will have the highest dipole moment?

asked Mar 10, 2014 by sreemathi.v

1 answer

If we assume linear structure of water (instead of bent),then which one of the following properties cannot be explained?

asked Mar 10, 2014 by sreemathi.v

1 answer

Molecular geometries of $SF_4,CF_4$ and $XeF_4$ are :

asked Mar 10, 2014 by sreemathi.v

1 answer

The common features among the species $CN^-,CO$ and $NO^+$ are :

asked Mar 10, 2014 by sreemathi.v

1 answer

The dipole moment of a hydrogen halide $H-X$ is 1.80 and the bond length is 1.5$A^{\large\circ}$.The percentage of ionic character of H-X bond will be :$(e=4.8\times 10^{-10}$e.s.u)

asked Mar 10, 2014 by sreemathi.v

1 answer

Find the bond angle of $H_2S$.If the S-H bond moment is 0.72D and $\mu=0.95D$

asked Mar 10, 2014 by sreemathi.v

1 answer

Which statement best describes the structure of $PF_3Cl_2$

asked Mar 10, 2014 by sreemathi.v

1 answer

Magnetic moment of $K_3Fe(C_2O_4)_3.3H_2O$ is

asked Mar 10, 2014 by sreemathi.v

1 answer

Which of the following is the correct order of O-O bond length in $O_2,H_2O_2$ and $O_3$ is :

asked Mar 10, 2014 by sreemathi.v

1 answer

Which of the following is the correct order for the strength of hydrogen bonds

asked Mar 10, 2014 by sreemathi.v

1 answer

What is the percentage of ionic character of HCl.If $\mu=1.02D$, bond length is $1.275\overset{\circ}{A}$ ($e=4.8\times 10^{-10}$e.s.u)?

asked Mar 10, 2014 by sreemathi.v

1 answer

C-C bond in $C_2H_6$ undergoes heterolytic fission,the hybridisation of carbon is/are

asked Mar 10, 2014 by sreemathi.v

1 answer

Which of the following is the correct order of bond angle ?

asked Mar 10, 2014 by sreemathi.v

1 answer

The molecule that will have dipolemoment is

asked Mar 10, 2014 by sreemathi.v

1 answer

Which one of the following would require the largest amount of energy to cause dissociation

asked Mar 10, 2014 by sreemathi.v

1 answer

In which one of the following pairs,molecules/ions have similar shape?

asked Mar 10, 2014 by sreemathi.v

1 answer

In which one of the following pairs,the species have similar geometry

asked Mar 10, 2014 by sreemathi.v

1 answer

Which of the following is the correct order of dipole moment value?

asked Mar 10, 2014 by sreemathi.v

1 answer

Among the following molecules,the dipole moment is the highest for

asked Mar 10, 2014 by sreemathi.v

1 answer

Which one of the following compound contains a cation having non-inert gas outermost configuration?

asked Mar 10, 2014 by sreemathi.v

1 answer

Among the following the correct statement is

asked Mar 10, 2014 by sreemathi.v

1 answer

The bond dissociation energy of $B-F$ in $BF_3$ in 646KJ$mol^{-1}$ whereas that of C-F in $CF_4$ is 515KJ$mol^{-1}$. The correct reason for higher B-F bond dissociation energy as compared to that of C-F is

asked Mar 10, 2014 by sreemathi.v

1 answer

The structure of $XeO_2F_2$ based on VSEPR theory is best described as

asked Mar 7, 2014 by sreemathi.v

1 answer

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