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Aqueous Solution of BaBr(2) gives yellow...

Aqueous Solution of `BaBr_(2)` gives yellow precipitate with:

A

`K_(2)CrO_(4)`

B

`AgNO_(3)`

C

`(CH_(3)COO)_(2)Pb`

D

(A) and (B) both.

Text Solution

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The correct Answer is:
To determine which aqueous solution of BaBr₂ gives a yellow precipitate, we need to analyze the reactions with each of the provided options. ### Step-by-Step Solution: 1. **Identify the Reactants**: We have an aqueous solution of BaBr₂ and we need to check its reaction with the given options: K₂CrO₄, NaNO₃, and CH₃COO₂Pb. 2. **Reaction with K₂CrO₄**: - When BaBr₂ reacts with K₂CrO₄, barium ions (Ba²⁺) react with chromate ions (CrO₄²⁻). - The reaction can be written as: \[ Ba^{2+} + CrO_4^{2-} \rightarrow BaCrO_4 \downarrow \] - Barium chromate (BaCrO₄) is formed, which is a yellow precipitate. 3. **Reaction with NaNO₃**: - When BaBr₂ reacts with NaNO₃, barium ions (Ba²⁺) react with nitrate ions (NO₃⁻). - The reaction can be written as: \[ Ba^{2+} + 2NO_3^{-} \rightarrow Ba(NO_3)_2 \] - Barium nitrate (Ba(NO₃)₂) is soluble in water, and no precipitate is formed. 4. **Reaction with CH₃COO₂Pb (Lead Acetate)**: - When BaBr₂ reacts with lead acetate, barium ions (Ba²⁺) react with acetate ions (CH₃COO⁻). - The reaction can be written as: \[ Ba^{2+} + 2CH_3COO^{-} \rightarrow Ba(CH_3COO)_2 \] - This reaction does not produce a yellow precipitate; instead, barium acetate is soluble in water. 5. **Conclusion**: - From the reactions analyzed, only the reaction with K₂CrO₄ produces a yellow precipitate (BaCrO₄). - Therefore, the answer to the question is that an aqueous solution of BaBr₂ gives a yellow precipitate with K₂CrO₄. ### Final Answer: The aqueous solution of BaBr₂ gives a yellow precipitate with K₂CrO₄.
To determine which aqueous solution of BaBr₂ gives a yellow precipitate, we need to analyze the reactions with each of the provided options. ### Step-by-Step Solution: 1. **Identify the Reactants**: We have an aqueous solution of BaBr₂ and we need to check its reaction with the given options: K₂CrO₄, NaNO₃, and CH₃COO₂Pb. 2. **Reaction with K₂CrO₄**: - When BaBr₂ reacts with K₂CrO₄, barium ions (Ba²⁺) react with chromate ions (CrO₄²⁻). ...
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