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

MEDIUM

Earn 100

Calculate the molarity and normality of the solution containing $5 g of NaOH in 450 mL$ of solution.

Important Questions on Solutions

MEDIUM

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

The molarity of the solution prepared by dissolving

6.3 g

of oxalic acid

(H_{2} C_{2} O_{4} \cdot 2 H_{2} O)

250 mL

of water in

mol L^{- 1}

x \times 10^{- 2} .

The value of

x

is _________ . (Nearest integer)
[Atomic mass :

H : 1.0, C : 12.0, 0 : 16.0 J

]

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

HARD

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

Density of

3 M

solution of

NaCl

1.25 g / mL .

Calculate the volume of water required to make

1000 mL

of this

NaCl

solution. [Consider the density of water as

1 g / mL] .

MEDIUM

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

500 ml

{CaCl}_{2}

solution contains

3.01 \times 10^{22}

chloride ions, molarity of the solution will be

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 $1 M NaOH$ .

EASY

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

If $80 g$ of copper sulphate ${CuSO}_{4} \cdot 5 H_{2} O$ is dissolved in deionised water to make $5 L$ of solution. The concentration of the copper sulphate solution is $x \times 10^{- 3} mol L^{- 1} .$ The value of $x$ is _____.

$[Atomic masses Cu : 63.54 u, S : 32 u, O : 16 u, H : 1 u]$

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

8 gm

NaOH

is dissolved in

250 ml

water. Determine the molarity of the solution.

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)

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

Concentrated ${HNO}_{3}$ is $63 % {HNO}_{3}$ by mass and has a density of $1.4 g / ml .$ How many milliliters of this solution are required to prepare $250 ml$ of a $1.2 M {HNO}_{3}$ solution ?

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

1.2 g

Mg

is treated with

100 mL

1 M

H_{2} {SO}_{4}

. Molar concentration of the

H_{2} {SO}_{4}

solution after complete reaction will be

EASY

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

100 mL

{Na}_{3} {PO}_{4}

solution contains

3.45 g

of sodium. The molarity of the solution is .....

\times 10^{- 2} mol L^{- 1}

. (Nearest integer)
[Atomic Masses -

Na : 23.0 u, O : 16.0 u, P : 31.0 u]

EASY

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

0.05 g

of urea is dissolved in

5 g

of water, then

EASY

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

When the temperature of a solution increases then-

EASY

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

4.0 grams of $NaOH$ (Molar mass = $40.0 g {mol}^{- 1}$ ) is dissolved in $500 {cm}^{3}$ of water. What is the molarity of $NaOH$ solution?

MEDIUM

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

If the concentration of glucose

(C_{6} H_{12} O_{6})

in blood is

0.72 g L^{- 1},

the molarity of glucose in blood is

- \times 10^{- 3} M

(Nearest integer):

[

Given : Atomic mass of

C = 12, H = 1, O = 16 u]

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 :

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

)

Calculate the molarity and normality of the solution containing 5g of NaOH in 450 mL of solution.

Important Questions on Solutions

Learn and Prepare for any exam you want !

Calculate the molarity and normality of the solution containing $5 g of NaOH in 450 mL$ of solution.