Home
Class 11
CHEMISTRY
Alkali metals readily react with oxyacid...

Alkali metals readily react with oxyacids forming corresponding salts (like `M_(2)CO_(3), MHCO_(3), MNO_(3), M_(2)SO_(4)` etc) with evolution of hydrogen. They also dissolve in liquid NH3 but without the evolution of hydrogen. The colour of its dilute solution is blue when it is heated and concentrated, then its colour becomes bronze
Among the carbonates of alkali metals which one has highest stability

A

`Cs_(2)CO_(3)`

B

`Rb_(2)CO_(3)`

C

`K_(2)CO_(3)`

D

`Na_(2)CO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
In alkali metl carbonaties from top to bottom stability increases due to decreasing of crystal lattice energy of their corresponding oxides
Promotional Banner

Similar Questions

Explore conceptually related problems

Alkali metals readily react with oxyacids forming corresponding salts (like M_(2)CO_(3), MHCO_(3), MNO_(3), M_(2)SO_(4) etc) with evolution of hydrogen. They also dissolve in liquid NH3 but without the evolution of hydrogen. The colour of its dilute solution is blue when it is heated and concentrated, then its colour becomes bronze Among the nitrate of alkali metals which one can be decomposed to its oxide

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Among the metals given below, which metal will not give its sulphate on treatment with dil. H_(2)SO_(4) .

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Which metal sulphate will decompose into SO_(3) and metal oxide when heated:

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. When BaCl_(2) solution is added in aq. Solution of NaHSO_(4) a white ppt. is obtained which is of:

Passage - VII : An aqueous solution of a gas (x) gives the following reactions (1) It decolourises an acidified K_(2)Cr_(2)O_(7) solution (2) On boiling with H_(2)O_(2) cooling it and then adding on aqueous solution of BaCl_(2) , a precipitation insoluble in dilute HCl is obtained (3) On passing H_(2)S in the solution white turbidity (y) is obtained (4) When gas 'x' is heated with concentrated HNO_(3) evolves a brown coloured gas (A) (5) When 'x' also dissolves in Na_(2)SO_(3) solution on heating a clear solution (C ) is formed. The brown coloured gas is

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Select the stable hydrogen sulphate which can be obtained in solid state:

Passage - VII : An aqueous solution of a gas (x) gives the following reactions (1) It decolourises an acidified K_(2)Cr_(2)O_(7) solution (2) On boiling with H_(2)O_(2) cooling it and then adding on aqueous solution of BaCl_(2) , a precipitation insoluble in dilute HCl is obtained (3) On passing H_(2)S in the solution white turbidity (y) is obtained (4) When gas 'x' is heated with concentrated HNO_(3) evolves a brown coloured gas (A) (5) When 'x' also dissolves in Na_(2)SO_(3) solution on heating a clear solution (C ) is formed. "C" is

Passage - VII : An aqueous solution of a gas (x) gives the following reactions (1) It decolourises an acidified K_(2)Cr_(2)O_(7) solution (2) On boiling with H_(2)O_(2) cooling it and then adding on aqueous solution of BaCl_(2) , a precipitation insoluble in dilute HCl is obtained (3) On passing H_(2)S in the solution white turbidity (y) is obtained (4) When gas 'x' is heated with concentrated HNO_(3) evolves a brown coloured gas (A) (5) When 'x' also dissolves in Na_(2)SO_(3) solution on heating a clear solution (C ) is formed. Gas 'x' is

Passage - VII : An aqueous solution of a gas (x) gives the following reactions (1) It decolourises an acidified K_(2)Cr_(2)O_(7) solution (2) On boiling with H_(2)O_(2) cooling it and then adding on aqueous solution of BaCl_(2) , a precipitation insoluble in dilute HCl is obtained (3) On passing H_(2)S in the solution white turbidity (y) is obtained (4) When gas 'x' is heated with concentrated HNO_(3) evolves a brown coloured gas (A) (5) When 'x' also dissolves in Na_(2)SO_(3) solution on heating a clear solution (C ) is formed. y is

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Select the thermally more stable salt from given pairs: A) Al_(2)(SO_(4))_(3)" "B)Al(NO_(3))_(3)" "C) Ca(NO_(3))_(2)" "D) CaSO_(4)" "E )FeSO_(4)" "F) Fe(NO_(3))_(2)