Assertion :When $C O_{2}$ is continuously bubbled through lime water a precipitate is formed which later dissolves. Reason: Calcium carbonate is initially formed which reacts further with carbon dioxide to form calcium bicarbonate.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
When $C O_{2}$ is continuously bubbled through lime water a precipitate is formed which later dissolves.
Calcium carbonate is initially formed which reacts further with carbon dioxide to form calcium bicarbonate, which is soluble in water. Because hydration energy of calcium bicarbonate is greater than lattice energy.
$C a (O H)_{2} + C O_{2} - H_{2} O - --- \to C a C O_{3} ↓ (milky) H_{2} O + C O_{2} - ----- \to C a (H C O_{3})_{2}$
Hence, both the assertion and reason are correct and the reason is the correct explanation for the assertion.

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Similar questions

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

.

Reason:

CaO

formed by decomposition of

{CaCO}_{3}

reacts with

{SiO}_{2}

to form slag.

Assertion (A) Phenol forms 2, 4, 6-tribromophenol on treatment with $B r_{2}$ in carbon disulphide at 273K.
Reason (R) Bromine polarises in carbon disulphide.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.