carbon dioxide gas is passed through lime water to form a precipitate of calcium carbonate . barium chloride reacts with aluminium sulphate to give aluminium chloride and precipitate of barium sulphate.
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3Bacl2+Al2(SO4)3=3BaSO4+2AlCl3
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CO2 + Ca(OH)2 = CaCO3
BaCl2 + Al2(So4)3 = AlCl3 + BaSo4
BaCl2 + Al2(So4)3 = AlCl3 + BaSo4
sahajpratapsp3u13j:
its caco3 + h2
okk
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