NCERT Class XI Chemistry The p-Block Elements Solutions
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Question : 13
Total: 38
Rationalise the given statements and give chemical reactions :
(i) Lead (II) chloride reacts withC l 2 P b C l 4
(ii) Lead (IV) chloride is highly unstable towards heat.
(iii) Lead is known not to form an iodide,P b I 4
(i) Lead (II) chloride reacts with
(ii) Lead (IV) chloride is highly unstable towards heat.
(iii) Lead is known not to form an iodide,
Solution:
(i) P b C l 2 + C l 2 P b C l 4
Lead is more stable in +2 oxidation state than in +4 state due to inert pair effect. Thus, the reaction is not feasible.
(ii)P b C l 4
P b C l 2 + C l 2
Pb is more stable in its +2 oxidation state due to inert pair effect. As a result, when subjected to heat, Pb (IV) goes to Pb (II) state.
(iii)P b + 2 I 2 P b I 4
I –
That is why,P b I 4
Lead is more stable in +2 oxidation state than in +4 state due to inert pair effect. Thus, the reaction is not feasible.
(ii)
Pb is more stable in its +2 oxidation state due to inert pair effect. As a result, when subjected to heat, Pb (IV) goes to Pb (II) state.
(iii)
That is why,
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