Assertion :The carbonate of lithium decomposes easily on heating to form lithium oxide and $C O_{2}$ . Reason: Lithium being very small in size polarises large carbonate ion leading to the formation of more stable $L i_{2} O$ and $C O_{2}$ .

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

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

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

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both Assertion and Reason are incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The carbonate of lithium decomposes easily on heating to form lithium oxide and $C O_{2}$ . Other alkali metal carbonates do not decompose.
$L i_{2} C O_{3} Δ - \to L i_{2} O + C O_{2} ↑$
Lithium being very small in size polarises large carbonate ion. It distorts the electron cloud on the nearby oxygen atom of large carbonate ion. It weakens $C - O$ bond and strengthens $L i - O$ bond. It leads to the formation of more stable $L i_{2} O$ and $C O_{2}$ .
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

Suggest Corrections

Similar questions

Q. Assertion : The carbonate of lithium decomposes easily on heating to form lithium oxide and

C O_{2}

.
Reason : Lithium being very small in size polarises large carbonate ion leading to the formation of more stable

L i_{2} O

and

C O_{2}

Q. Assertion :The carbonate of lithium decomposes easily on heating. Reason: Lithium being very small in size polarises large carbonate ion leading to the formation of more stable

L i_{2} O

and

C O_{2}

In the following question, a statement fo Assertion (A) followed by a statement fo Reason (R ) is given. Choose the correct option out of the choices given below in each question
Assertion (A) the carbonate of lithium decomposes easily on heating to form lithium oxide and $C O_{2}$
Reason (R) Lithium being very small in size polarises large carbonate ion leading to the formation of more stable $L i_{2} O a n d C O_{2}$
(a) Both A and R are correct and R is the correct Explanation of A
(b) Both A and R are correct but R is not the correct explanation Of A
(c) Both A and R are not Correct
(d) A is not correct but R is correct

Q. Assertion :As the electropositive character increases down the group, the stability of carbonates and hydrogen carbonates of alkali metals increases. Reason: Lithium carbonates are not so stable to heat: lithium being very small in size polarises a large

C O_{3}^{2 -}

leading to the formation of more stable

L i_{2} O

and

C O_{2}

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

Join BYJU'S Learning Program

Assertion :The carbonate of lithium decomposes easily on heating to form lithium oxide and CO2. Reason: Lithium being very small in size polarises large carbonate ion leading to the formation of more stable Li2O and CO2.

Assertion :The carbonate of lithium decomposes easily on heating to form lithium oxide and $C O_{2}$ . Reason: Lithium being very small in size polarises large carbonate ion leading to the formation of more stable $L i_{2} O$ and $C O_{2}$ .