JEE Mains · Chemistry · STD 11 - 7. Redox reactions
Given below are two statements :
Statement (I) : Oxidising power of halogens decreases in the order \(F_2 > Cl_2 > Br_2 > I_2\), which is the basis of "Layer test".
Statement (II) : "Layer test" to identify \(Br_2\) and \(I_2\) in aqueous solution involves the oxidation of bromide or iodide into \(Br_2\) or \(I_2\) respectively with \(Cl_2\), which is a type of displacement redox reaction.
In the light of the above statements, choose the correct answer from the options given below :
- A Both Statement I and Statement II are true
- B Both Statement I and Statement II are false
- C Statement I is true but Statement II is false
- D Statement I is false but Statement II is true
Answer & Solution
Correct Answer
(A) Both Statement I and Statement II are true
Step-by-step Solution
Detailed explanation
Statement I is true. The oxidising power of halogens decreases down the group in the order \(F_2 > Cl_2 > Br_2 > I_2\). A stronger oxidising halogen can displace a weaker oxidising halogen from its aqueous halide solution. This principle forms the basis of the layer test.…
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