Assertion :A solution of $B i C l_{3}$ in concentrated $H C l$ when diluted with water gives white precipitate. Reason: $B i C l_{3}$ forms insoluble $B i O^{+}, C l^{-}$ when diluted with a large quantity of water.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is incorrect but Reason is correct

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Both Assertion and Reason are correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Bismuth chloride when diluted with water in presence of concentrated hydrochloric acid, it leads to the formation of white precipitate of insoluble compound called as bismuth oxychloride.
$B i C l_{3} + H_{2} O \to B i O C l ↓ (white ppt.) + 2 H C l$

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Assertion :A solution of BiCl3 in concentrated HCl when diluted with water gives white precipitate. Reason: BiCl3 forms insoluble BiO+,Cl− when diluted with a large quantity of water.

Assertion :A solution of $B i C l_{3}$ in concentrated $H C l$ when diluted with water gives white precipitate. Reason: $B i C l_{3}$ forms insoluble $B i O^{+}, C l^{-}$ when diluted with a large quantity of water.