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Salt A commonly used in bakery products ...

Salt A commonly used in bakery products on heating gets converted into another salt B which itself used for removal of hardness of water and a gas C is evolved. The gas C when passed through lime water, turns it milky . Identify A,B and C.

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Baking powder `(NaHCO_3)` , salt A is commonly used in bakery products. On heating , if forms sodium carbonate `(Na_(2)CO_(3))` , B and `CO_2` gas, C is evolved . When `CO_2` gas is passed through lime water it form calcium carbonate `(CaCO_3)` , which is slightly soluble in water making it milky.
`A-NaHNO_(3), " "B-Na_(2)CO_(3), " " C - CO_(2)` gas
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