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JEE Main levelSingle correct optionDifficulty 2 of 3pb137

When aqueous $AlCl X_{3}$ is mixed with aqueous $Na X_{2} CO X_{3}$ , the observation is

Aa white precipitate of $Al X_{2} (CO X_{3}) X_{3}$ with no gas
Ba white gelatinous precipitate and evolution of $CO X_{2}$
Ca clear solution of sodium aluminate
Da blue precipitate and evolution of $H X_{2}$

Answer: B

Mutual hydrolysis:

2 Al X^{3 +} + 3 CO X_{3} X^{2 -} + 3 H X_{2} O 2 Al (OH) X_{3} + 3 CO X_{2}

. Aluminium carbonate is not stable in water.

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