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A potassium iodide ( ) solution containing starch turns blue on the addition of chlorine. Which one…
A potassium iodide ($\text{KI}$) solution containing starch turns blue on the addition of chlorine. Which one of the following statements explain this?
(P) The reduction potential of $\text{Cl}_2$ is more than that of $\text{I}_2$.
(Q) The oxidation potential of $\text{Cl}_2$ is more than that of $\text{I}_2$.
(R) The product formed when $\text{Cl}_2$ combines with starch is blue.
(S) The product formed when $\text{I}_2$ combines with starch is blue.
- (a)Only P and R
- (b)Only Q and R
- (c)Only Q and S
- (d)Only P and S
Answer
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From ISC 2024 Specimen Chemistry Paper 1, question 1(B)(i).