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Hardness of Water and Treatment

Which is inso...

Question

Which is insoluble in water ?

A

calcium carbonate

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B

Sodium bicarbonate

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C

Calcium bicarbonate

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D

Sodium carbonate

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Solution

The correct option is A
calcium carbonate

Calcium carbonate is insoluble in water.

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Similar questions

Q. In the reaction:

C a C O_{3} + H_{2} O + C O_{2} \to C a (H C O_{3})_{2}

calcium carbonate is insoluble while calcium bicarbonate is soluble in water.

Q. Calcium bicarbonate causes hardness in water but not calcium carbonate. Why?

Q. How many grams of calcium carbonate are required to produce enough carbon dioxide which can convert

0.5

mole of sodium carbonate into sodium bicarbonate?

C a C O_{3} ⟶ C a O + C O_{2}

N a_{2} C O_{3} + H_{2} O + C O_{2} ⟶ 2 N a H C O_{3}

Q. How many grams of calcium carbonate are required to produce enough carbon dioxide which can convert

0.5

mol of sodium carbonate into sodium bicarbonate?

C a C O_{3} ⟶ C a O + C O_{2}

N a_{2} C O_{3} + H_{2} O + C O_{2} ⟶ 2 N a H C O_{3}

Q. Sodium bicarbonate on heating decomposes to form sodium carbonate,

C O_{2}

0.2

mole of sodium bicarbonate is completely decomposed, how many moles of sodium carbonate is formed?

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