Q2 / 90 · JEE Main 2023 (13 Apr Shift 2) · Chemistry

In the wet tests for detection of various cations by precipitation, ${Ba}^{2 +}$ cations are detected by obtaining precipitate of

A
Ba(ox) : Barium oxalate
Correct answer
B
${BaCO}_{3}$
C
$Ba (OAc)_{2}$
D
${BaSO}_{4}$

Solution

${Ba}^{2 +}$ belongs to $V^{th}$ Group and hence they are precipitated with ${CO}_{3}^{2 -}$ to give ppt of ${BaCO}_{3}$ . In Wet tests for cations, $({NH}_{4})_{2} {CO}_{3}$ is used as a group reagent for fifth group cations $({Ba}^{2 +}, {Ca}^{2 +}, {Sr}^{2 +})$ .

${Ba}^{2 +} + ({NH}_{4})_{2} {CO}_{3} \to {BaCO}_{3} + {NH}_{4}^{\oplus}$

Hence, the correct answer is option: 'B'.

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In the wet tests for detection of various cations by precipitation, Ba2+ cations are detected by obtaining precipitate of

Solution

Relevant Questions

In the wet tests for detection of various cations by precipitation, ${Ba}^{2 +}$ cations are detected by obtaining precipitate of