JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Hard

1 of 1

Application +4 | -1

One

\mathrm{g}

of impure

\mathrm{Na}_2 \mathrm{CO}_3

is dissolved in water and the solution is made upto

250 \mathrm{~mL}

. To

50 \mathrm{~mL}

of this made up solution,

50 \mathrm{~mL}

0.1 \mathrm{~N} \mathrm{~HCl}

is added and the mixture after shaking well required

10 \mathrm{~mL}

0.16 \mathrm{~N}

sodium hydroxide solution for complete neutralization. Calculate the per cent purity of the sample of

\mathrm{Na}_2 \mathrm{CO}_3

View answer and explanation

Correct option: A

90 \%

Option A (

90 \%

) is correct because the purity is calculated based on the amount of

Na_2CO_3

that reacts with HCl and NaOH.

More Questions from SOME BASIC CONCEPTS OF CHEMISTRY

Practice All Chapter MCQs →

{H_2}O.

mol\,\,k{g^{ - 1}})

2.24 {~L}

{CH}_4

{CO}_2

0.5 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4

0.5 \mathrm{~g}

\mathrm{Cu}(\mathrm{II})