Advertisements
Advertisements
प्रश्न
Assertion (A): The carbonate of lithium decomposes easily on heating to form lithium oxide and CO2.
Reason (R): Lithium being very small in size polarises large carbonate ion leading to the formation of more stable Li2O and CO2.
पर्याय
Both A and R are correct and R is the correct explanation of A.
Both A and R are correct but R is not the correct explanation of A.
Both A and R are not correct.
A is not correct but R is correct.
उत्तर
Both A and R are correct and R is the correct explanation of A.
Explanation:
Lithium beimg small in size, polarises large carbonate ion. Polarisation is the distortion of electron cloud of the anion by the cation. Thus, the carbonate of lithium decomposes easily on heating to form lithium oxide and CO2. The reaction is shown below.
\[\ce{Li2CO3 ⇌ Li2O + CO2}\]
APPEARS IN
संबंधित प्रश्न
Why is Li2CO3 decomposed at a lower temperature whereas Na2CO3 at a higher temperature?
What happens when quick lime is heated with silica?
What happens when chlorine reacts with slaked lime?
Why is LiF almost insoluble in water whereas LiCl soluble not only in water but also in acetone?
Comment on the following observation:
Lithium is the only alkali metal to form a nitride directly.
How do you account for the strong reducing power of lithium in aqueous solution?
Lithium resembles magnesium in some of its properties. Mention two such properties and give reasons for this resemblance.
All compounds of alkali metals are easily soluble in water but lithium compounds are more soluble in organic solvents. Explain.
Lithium hydride can be used to prepare other useful hydrides. Beryllium hydride is one of them. Suggest a route for the preparation of beryllium hydride starting from lithium hydride. Write chemical equations involved in the process.
Lithium shows similarities to magnesium in its chemical behaviour because of ______.
