Match the column.
Column –I | Column -II |
(i) Cu2+ ions react with Fe2+ ions according in the reaction Cu2+ + 2Fe2+ Cu+2 + Fe3+ At equilibrium if excess Cu(s) is added the volume | [A] The equilibrium move to the right |
(ii) For the reaction CaCO3(s) CaO(s) + CO2(g), on doubling the volume | [B] at lower pH |
(iii) The extent of Hydrohys is of A– in aqueous is of A– in aqueous is greater | [C] greater at higher temperature |
(iv) The extent vapourisation | [D] The equilibrium remain unaffected |
Text Solution
Verified by Experts(i) [D]; (ii) [A]; (iii) [B]; (iv) [R]
(i) [D]
(ii) [A]
(iii) [B]
(iv) [R]
Sol.
Since Cu(S) is absent in the equilibrium expression, therefore with the addition of Cu(S) the equilibrium with be unaffected.
(Α)→ D
On doubling the volume 
decreases, therefore reaction move to right.
→ A
A – + H 2 O 
HA + OH – in the presence of
excess of H + the degree of hydrolysis of A – will
be greater
→ B
H 2 O ( λ ) 
H 2 O(g) Δ H = + Ve (endotheremic reaction). Therefore on increasing temperature the extent of vapourisation will be greater
→ C
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