NTA Abhyas NEET2020ChemistryChemical KineticsPractice
Consider the following reaction in aqueous solution. 5 Br − aq + BrO 3 − aq + 6 H + aq → 3 Br 2 aq + 3 H 2 O l If the rate of appearance of Br 2 at a particular time during the reaction is 0.025 Msec − 1 , what is the rate of disappearance (in Msec − 1 ) of Br − at that time?
Options
- A0.025 Msec − 1
- B0.042 Msec − 1
- C0.075 Msec − 1
- D0.125 Msec − 1
Correct answer
B. 0.042 Msec − 1
Step-by-step solution
The two rates are related as − 1 5 d Br − dt = 1 3 d Br 2 dt − d Br − dt = 5 3 d Br 2 dt = 5 3 × 0.025 = 0.042 Msec − 1