JEE Advanced 2022 — Paper 1 — CHEM-III solution

JEE Advanced2022Paper 1CHEM-III

LIST-I contains compounds and LIST-II contains reactions

Match each compound in LIST-I with its formation reaction(s) in LIST-II, and choose the correct option

Solution

Examine each LIST-II reaction and identify its products.

(P) $Mg(HCO_{3})_{2} + 2 Ca(OH)_{2} \to 2 CaCO_{3} ↓ + Mg(OH)_{2} ↓ + 2 H_{2} O$ . Forms both CaCO $_{3}$ and Mg(OH) $_{2}$ .

(Q) $BaO_{2} + H_{2} SO_{4} \to BaSO_{4} + H_{2} O_{2}$ . Forms H $_{2}$ O $_{2}$ .

(R) $Ca(OH)_{2} + MgCl_{2} \to Mg(OH)_{2} + CaCl_{2}$ . Forms Mg(OH) $_{2}$ .

(S) $BaO_{2} + 2 HCl \to BaCl_{2} + H_{2} O_{2}$ . Forms BaCl $_{2}$ .

(T) $Ca(HCO_{3})_{2} + Ca(OH)_{2} \to 2 CaCO_{3} ↓ + 2 H_{2} O$ . Forms CaCO $_{3}$ .

Best one-to-one matching: I (H $_{2}$ O $_{2}$ ) $\to$ Q; II (Mg(OH) $_{2}$ ) $\to$ R; III (BaCl $_{2}$ ) $\to$ S; IV (CaCO $_{3}$ ) $\to$ P.

The correct matching is option (D).

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