10. CaCO3. Rb2CO3, CCO

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Similar Questions

Permanent hardness is due to

S O_{4}^{2 -}

and

C l^{-}

C a^{2 +}

and

M g^{2 +}

and is removed by the addition of

N a_{2} C O_{3}

C a S O_{4} + N a_{2} C O_{3} ⟶ C a C O_{3} + N a_{2} S O_{4}

C a C l_{2} + N a_{2} C O_{3} ⟶ C a C O_{3} + 2 N a C l

If hardness is

100

ppm

C a C O_{3}

, amount of

N a_{2} C O_{3}

required to soften

10

L of hard water is :

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Compare thermal stability of

(N a)_{2} C O_{3}

and

C a C O_{3}

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Permanent hardness is due to

C l^{⊝}

and

S O_{4}^{2 -}

M g^{2 +}

and

C a^{2 +}

and is removed by adding

N a_{2} C O_{3}

C a S O_{4} + N a_{2} C O_{3} \to C a C O_{3} + N a_{2} S O_{4}

C a C l_{2} + N a_{2} C O_{3} \to C a C O_{3} + 2 N a C l

Which of the following statements is/are correct?

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$N a_{2} S O_{4} + C a C O_{3} + 4 C \to A - - + B - - + 4 C O$ , $A$ & $B$ are

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$N a_{2} C O_{3}$ does not decompose on heating where as $C a C O_{3}$ decomposes. Why?

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