1. Tardigrade
  2. Question
  3. Chemistry
  4. For kinetic study of the reaction of iodide ion with H 2 O 2 at room temperature: (A) Always use freshly prepared starch solution. (B) Always keep the concentration of sodium thiosulphate solution less than that of KI solution. (C) Record the time immediately after the appearance of blue colour. (D) Record the time immediately before the appearance of blue colour. (E) Always keep the concentration of sodium thiosulphate solution more than that of KI solution. Choose the correct answer from the options given below :

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Q. For kinetic study of the reaction of iodide ion with $H _2 O _2$ at room temperature :
(A) Always use freshly prepared starch solution.
(B) Always keep the concentration of sodium thiosulphate solution less than that of $KI$ solution.
(C) Record the time immediately after the appearance of blue colour.
(D) Record the time immediately before the appearance of blue colour.
(E) Always keep the concentration of sodium thiosulphate solution more than that of $KI$ solution.
Choose the correct answer from the options given below :

JEE MainJEE Main 2022Hydrogen

Solution:

The is recorded immediately after the blue colour appears.
$Na _2 S _2 O _3$ is kept in limited amount.