The primary standard solution for estimation of ${\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3}$ is

${{\rm{K}}_2}{\rm{C}}{{\rm{r}}_2}{{\rm{O}}_7}$

JEE CHEMISTRY MCQ: S-BLOCK ELEMENTS

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The primary standard solution for estimation of

\mathrm{N}{\mathrm{a}_2}{\mathrm{S}_2}{\mathrm{O}_3}

View answer and explanation

Correct option: A

{\mathrm{I}_2}

solution

Option A (

{\mathrm{I}_2}

solution) is correct because a standard iodine solution is commonly used to standardize sodium thiosulfate solutions in iodometric titrations.

Practice All Chapter MCQs →

(A)

(A)

\mathrm{K}_2 \mathrm{CrO}_4

\mathrm{AgNO}_3

\mathrm{H}_2 \mathrm{~S}

\left(\mathrm{NH}_4\right)_2 \mathrm{CO}_3

\mathrm{NH}_4 \mathrm{OH}

0.297 \mathrm{~g}

(A)

0.197 \mathrm{~g}

(B)

(A)

\mathrm{KCl}

\mathrm{NaCl}

{LiCl}

{Li}

{Cl}