Question

A reaction occurs via the following sequence of elementary steps. What is the reaction intermediate? 1st step: A + 2B → 2C 2nd step: 2C → D Question 9 options: A) B B) There is no intermediate C) C D) A E) D A reaction occurs via the following sequence of elementary steps. What is the rate law based on this reaction mechanism? 1st step: A + B → 2C + D slow 2nd step: C → E fast 3rd step: D → 2F fast Question 10 options: A) rate = k [E] B) rate = k [A] [B] C) rate = k [C] D) rate = k [E] [F]2 E) rate = k [C]2 [D] Which of the following statements is false? Question 3 options: A) The half life of a first order reaction is dependent on the initial concentration of reactant. B) It is not possible to determine the rate of a reaction from its balanced equation. C) The rate of zero order reactions are not dependent on concentration. D) The average rate of a reaction decreases during a reaction. E) None of the statements are false.

Answer 1

A reaction occurs via the following sequence of elementary steps. What is the reaction intermediate?

1st step: A + 2B → 2C

2nd step: 2C → D

Answer is option c that C is the intermediate because it is present in the opposite sides of the both equations so it cancel out

So the answer is C) C

A reaction occurs via the following sequence of elementary steps. What is the rate law based on this reaction mechanism?

1st step: A + B → 2C + D slow

2nd step: C → E fast 3rd step: D → 2F fast

Answer is option B because in the slow step only A and B are involved so rate depends on the A and B

B) rate = k [A] [B]

Which of the following statements is false?

Answwer is E) None of the statements are false.

Because all the statements are true