MEDIUM

Earn 100

Which of the following is correct expression relating molarity of solution $(M)$ and mole fraction of solute, having density $ρ$ ?

50% studentsanswered this correctly

Important Questions on Solutions

EASY

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

Which of the following factors affect molarity of solution?

EASY

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

Calculate the mass percentage of

3 g

of solute

A

dissolved in

18 g

of water.

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

3 \cdot 42 \times 10^{- 2} kg

Sugar (molar mass

342

) is dissolved in water to produce

234.2 g

of sugar syrup, what is the molality of sugar syrup ?

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

Density of

3 M

solution of

NaCl

1.25 g / mL .

The mass of the solvent in the solution is;

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

A solution of two components containing

n_{1}

moles of the

1^{st}

component and

n_{2}

moles of the

2^{nd}

component is prepared.

M_{1}

and

M_{2}

are the molecular weights of component 1 and 2 respectively. If

d

is the density of the solution in

{gml}^{- 1}, C_{2}

is the molarity and

x_{2}

is the mole fraction of the

2^{nd}

component, then

C_{2}

can be expressed as :

EASY

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

A mixture has

18 g

of water and

414 g

of ethanol. The mole fraction of water in the mixture is (assume ideal behaviour of the mixture)

EASY

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

Molality is defined as

EASY

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

The mole fraction of a solute in a $100$ molal aqueous solution ________ $\times 10^{- 2} .$

(Round off to the Nearest Integer).

[Given : Atomic masses: $H : 1.0 u, O : 16.0 u$ ]

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

The molarity of a solution obtained by mixing

750 mL

0.5 (M) HCl

with

250 mL

2 (M) HCl

will be

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

5.2

molal aqueous solution of methyl alcohol,

{CH}_{3} OH

, is supplied. What is the mole fraction of methyl alcohol in the solution?

EASY

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

When the concentration is expressed as the number of moles of solute per kilogram of the solvent, it is known as;

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

The mass percentage of nitrogen in histamine is ________

EASY

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

4.5 g

of compound

A (M . W . = 90)

was used to make

250 mL

of its aqueous solution. The molarity of the solution in

M

x \times 10^{- 1} .

The value of

x

is_____ (Rounded off to the nearest integer)

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

3.0 g

of oxalic acid

[{({CO}_{2} H)}_{2} \cdot 2 H_{2} O]

is dissolved in a solvent to prepare a

250 mL

solution. The density of the solution is

1.9 g / mL

. The molality and normality of the solution, respectively, are closest to

HARD

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

A $6.50$ molal solution of $KOH (aq .)$ has a density of $1.89 g {cm}^{- 3}$ . The molarity of the solution is $mol {dm}^{- 3}$ . (Round off to the Nearest Integer).

[Atomic masses: $K : 39.0 u; O : 16.0 u; H : 1.0 u$ ]

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

How many grams of ${Cl}_{2}$ gas will be obtained by the complete reaction of $31.6 gm$ of potassium permanganate with hydrochloric acid?

$[Mole mass of {KMnO}_{4} = 316 gm / mol]$

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

What is the normality of aqueous solution of

H_{2} {SO}_{4}

having

pH = 1 .

EASY

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

Which of the following statements is true?

$1$ ) $200 mL$ of $0.2 M$ $NaOH$ has a same number of moles of solute as $1000 mL$ of $1 M NaOH$ .
$2$ ) $200 mL$ of $1 M NaOH$ has a same number of moles as $1000 mL$ of $0.2 M NaOH$ .
$3$ ) $100 mL$ of $0.2 M NaOH$ has a same number of moles as $1000 mL$ of $1 M NaOH$ .
$4$ ) $2000 mL$ of $0.2 M NaOH$ has a same number of moles as $1000 mL$ of $1 M NaOH$ .

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

The mole fraction of urea in an aqueous urea solution containing

900 g

of water is

0.05

. If the density of the solution is

1.2 g {c m}^{- 3}

, the molarity of urea solution is _______. (Round off the answer to the nearest decimal)
(Given data: Molar masses of urea and water are

60 g {m o l}^{- 1}

and

18 g {m o l}^{- 1}

, respectively)

MEDIUM

Chemistry>Physical Chemistry>Solutions>Methods of Expressing Concentration of Solutions

The molarity of

{H N O}_{3}

in a sample which has density

1.4 g / m L

and mass percentage of

63 %

is ________ (Molecular Weight of

{H N O}_{3} = 63

)

Which of the following is correct expression relating molarity of solution (M) and mole fraction of solute, having density ρ?

Important Questions on Solutions

Learn and Prepare for any exam you want !

Which of the following is correct expression relating molarity of solution $(M)$ and mole fraction of solute, having density $ρ$ ?