Chemistry · JEE

Different methods for expressing the concentration of solution: molality, molarity, mole fraction, percentage (by volume and mass both) Short Tricks for JEE

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Balance then compare
In Physical Chemistry numericals, write the balanced relation first, then substitute values with units.

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Part of Solutions in JEE Main Chemistry.

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Q1ChemistryUnit 5: Solutions

Hydrochloric acid solution

A

and

B

have a concentration of

0.5 N

and

0.1 N

respectively. The volume of solutions

\boldsymbol{A}

and

B

required to make 2 litres of

\mathbf{0 . 2} \mathbf{N} \mathbf{H} \mathbf{C l}

are:

Q2ChemistryUnit 5: Solutions

The volume of ethyl alcohol (density

1.15 g / c c)

that has to be added to prepare

100 \mathrm{cc}

0.5 \mathrm{M}

ethyl alcohol solution in water is :

Q3ChemistryUnit 5: Solutions

Calculate the molality of a

1 \mathrm{M}

solution of sodium nitrate. The density of the solution is

1.25 g c m^{-3}

Q4ChemistryUnit 5: Solutions

Molarity is expressed as:

Q5ChemistryUnit 5: Solutions

Number of moles of solute in solution is represented by :

Q6ChemistryUnit 5: Solutions

The solubility of a substance is defined as the amount of solute in grams:

Q7ChemistryUnit 5: Solutions

Which of the following solutions has the more capacity dissolve the solute in the solvent?

Q8ChemistryUnit 5: Solutions

The molarity of

98 \%

\mathbf{H}_{2} \mathbf{S O}_{4}(\boldsymbol{d}=\mathbf{1} . \mathbf{8} \boldsymbol{g} / \boldsymbol{m} \boldsymbol{L})

by weight is:

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