If 0 . 05 g of urea is dissolved in 5 g of water, then

its molality will be greater than molarity

its molarity will be greater than molality

molarity and molality will be same

The number of moles of solute present in 1 dm 3 volume of solution

The number of moles of solute dissolved in 1 kg of solvent

The number of moles of solute dissolved in 1 kg of solution

The number of moles of solute dissolved in 100 dm 3 volume of solution

MEDIUM

Earn 100

A $5.2$ molal aqueous solution of methyl alcohol, ${CH}_{3} OH$ , is supplied. What is the mole fraction of methyl alcohol in the solution?

66.67% studentsanswered this correctly

Important Questions on Solutions

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

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

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

Calculate the molarity of a solution of

30 g

Co {({NO}_{3})}_{2} . 6 H_{2} O

4.3 L

of solution ? Consider atomic mass of

Co = 59, N = 14, O = 16, H = 1

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

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

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

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)

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

EASY

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

Molality is defined as

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 ?

EASY

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

0.05 g

of urea is dissolved in

5 g

of water, then

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

Molarity is:

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

The molarity of urea (molar mass

60 g {mol}^{- 1}

) solution obtained by dissolving

15 g

of urea in

500 {cm}^{3}

of water is

MEDIUM

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

The mass percentage of nitrogen in histamine is ________

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

)

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

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

100 m L

of a water sample contains

0.81 g

of calcium bicarbonate and

0.73

g of magnesium bicarbonate. The hardness of this water sample expressed in terms of equivalents of

C a C O_{3}

is:
(molar mass of calcium bicarbonate is

162 g m m o l^{- 1}

and magnesium bicarbonate is

146 g m o l^{- 1})

A 5.2 molal aqueous solution of methyl alcohol, CH3OH, is supplied. What is the mole fraction of methyl alcohol in the solution?

Important Questions on Solutions

Learn and Prepare for any exam you want !

A $5.2$ molal aqueous solution of methyl alcohol, ${CH}_{3} OH$ , is supplied. What is the mole fraction of methyl alcohol in the solution?