Home
Class 11
CHEMISTRY
Alkali metal carbonates are stable but c...

Alkali metal carbonates are stable but carbonates of alkaline earth metals decompose on heating to liberate `CO_(2)` Why? 

Text Solution

Verified by Experts

Polarising power of alkaline earth metal cations is more than that of alkali metal cations because of small size and high charge. Alkaline earth metal cations polarise a large `CO_(3)^(2-)` ion leading to the formation of more stable oxide (MO) and liberate `CO_(2)` gas.
`MCO_(3)rarrMO+CO_(2)uarr`
Promotional Banner

Topper's Solved these Questions

  • ALKALINE EARTH METALS

    AAKASH SERIES|Exercise SUBJECTIVE EXERCISE - 1 (SHORT ANSWER QUESTIONS)|7 Videos

  • ALKALINE EARTH METALS

    AAKASH SERIES|Exercise SUBJECTIVE EXERCISE - 1 (VERY SHORT ANSWER QUESTIONS)|9 Videos

  • ALKALI METALS

    AAKASH SERIES|Exercise Questions for descriptive answers|17 Videos

  • AROMATIC HYDROCARBONS

    AAKASH SERIES|Exercise OBJECTIVE EXERCIES - 3 (RECENT AIPMT/NEET QUESTIONS)|10 Videos

Similar Questions

Explore conceptually related problems

The oxides of alkali and alkali earth metals are basic and the their strenght increases down the group. The solubility of carbonates and sulphates of alkali and earth metals shown opposite trends. Only the carbonates of Li and alkaline earth metals decompose on heating. The bicarbonates of both alkali and alkali earth metals on heating give carbonates indentify the correct order of thermal stablities

The oxides of alkali and alkali earth metals are basic and the their strenght increases down the group. The solubility of carbonates and sulphates of alkali and earth metals shown opposite trends. Only the carbonates of Li and alkaline earth metals decompose on heating. The bicarbonates of both alkali and alkali earth metals on heating give carbonates The correct decreasing order of basic character of the oxides is

The carbonate which decomposes on heating is

Discuss on : (iii) Nitrates of alkaline earth metals.

Distinguish between carbonates and bicarbonates of alkali metals.

Write on the flame colours of the salts of alkaline earth metals .

Alkaline earth metal having least melting point is

The activity of alkaline earth metals as reducing agents

Why alkaline earth metals donot from monovalent ions ?

Comment on the ionisation potentials of alkaline earth metals .