A solution contains 4 g of Na2CO3 and NaCl- 25 mL of this solution requires 50 mL of N10 HCl for complete neutralization- The - composition of mixture is as nearest integer -

Let mass of nbsp; Na_2CO_3 nbsp;and NaCl in given mixture be 'a' and 'b' g respectively. ∴ nbsp;a+b =4 nbsp; nbsp; nbs ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Stoichiometric Calculations

A solution co...

Question

A solution contains $4$ g of ${N a}_{2} C O_{3}$ and $N a C l$ . $25$ mL of this solution requires $50$ mL of $\frac{N}{10}$ $H C l$ for complete neutralization. The $%$ composition of mixture is (as nearest integer) :

Open in App

Solution

Let mass of ${N a}_{2} C O_{3}$ and $N a C l$ in given mixture be $^{'} a^{'}$ and $^{'} b^{'}$ g respectively.
$∴ a + b = 4 . . . (i)$
The solution is allowed to react with $H C l$ ; only ${N a}_{2} C O_{3}$ reacts and thus, Meq. of ${N a}_{2} C O_{3} =$ Meq. of $H C l$ in $25$ mL $= 50 \times (\frac{1}{10}) = 5$
$∴$ Meq. of ${N a}_{2} C O_{3}$ in $250$ mL $= \frac{(5 \times 250)}{25} = 50$
or, $\frac{a}{\frac{106}{2}} \times 1000 = 50$
$∴ a = 2.65$
By (i), $b$ $= 4 - 2.65 = 1.35$
$∴ {N a}_{2} C O_{3} = (\frac{2.65}{4}) \times 100 = 66.25$ %
and $N a C l$ $=$ $33.75$ %
So, answer is $34$ %.

Suggest Corrections

Similar questions

5

g of mixture of

N a C l

and

N a_{2} C O_{3}

was dissolved in water and volume was made

250

ml. Now

25

ml of this solution required

40

ml of

\frac{N}{10}

H C l

for complete reaction. Find percentage of

N a C l

in mixture.

Q. A definite amount of

B a {C l}_{2}

was dissolved in

H C l

solution of unknown normality,

20

mL of this solution was treated with

21.4

mL of

\frac{N}{10} N a O H

for complete neutralization. Further

20

mL of solution was added to

50

mL of

\frac{N}{10} {N a}_{2} C O_{3}

and the precipitate was filtered off. The filtrate reacted with

10.5

mL of

0.08 N H_{2} S O_{4}

using phenolphthalein as an indicator. The strength of

H C l

(g/L) in the mixture is (as nearest integer) :

Q. A mixture of

H_{2} C_{2} O_{4}

and

N a H C_{2} O_{4}

weighing

2.02

g was dissolved in water and the solution made upto one litre.

10

mL of this solution required

3

mL of

0.1 N N a O H

solution for complete neutralization. In another experiment,

10

mL of the same in hot dilute

H_{2} S O_{4}

medium required

4

mL of

0.1 N K M n O_{4}

for complete neutralization. Calculate the mass of

N a H C_{2} O_{4}

in mixture (as nearest integer).

4 g

of a mixture of

N a C l

and

N a_{2} C O_{3}

were dissolved in water and volume made up to

250 m L

15 m L

of this solution required

50 m L

N / 10 H C l

for complete neutralisation. Calculate the percentage composition of the original mixture.

Q. A solution containing

10

g of a dibasic acid in

1000

g water freezes at

272.85 K

10

mL of this solution requires

12

mL of

N / 10

N a O H

for complete neutralization. If

K_{f}

for water is

1.86 K m o l^{- 1} k g

. Calculate Van't Hoff factor for acid (nearest integer).

Join BYJU'S Learning Program

A solution contains 4 g of Na2CO3 and NaCl. 25 mL of this solution requires 50 mL of N10 HCl for complete neutralization. The % composition of mixture is (as nearest integer) :

A solution contains $4$ g of ${N a}_{2} C O_{3}$ and $N a C l$ . $25$ mL of this solution requires $50$ mL of $\frac{N}{10}$ $H C l$ for complete neutralization. The $%$ composition of mixture is (as nearest integer) :