Chemistry
Assertion (A): Chlorine can displace iodide ions from KI solution.
Reason (R): It is an example of displacement reaction.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Chemical Reaction
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Answer
Both A and R are true but R is not the correct explanation of A.
Explanation — Chlorine is more active non-metal when compared to iodine. In the reactivity series of non-metals, chlorine is placed above iodine. Hence, chlorine displaces iodine from potassium iodide solution. Hence, the assertion (A) is true.
2KI + Cl2 ⟶ 2KCI + I2
Above reaction is displacement reaction in which a more active element chlorine displaces a less active element iodine from its salt solution. Hence the reason (R) is true.
However reason (R) does not explain about reactivity of chlorine and position of chlorine and iodine in reactivity series. Hence reason (R) is not a correct explanation of assertion (A).
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Name
(a) a carbonate which does not decompose on heating.
(b) a nitrate which produces oxygen as the only gas.
(c) a compound which produces carbon dioxide on heating
(d) a nitrate which produces brown gas on heating.