Question

Choose the correct statement-

i) The rate constant of a reaction decreases with temperature

ii) Order is always equal to molecularity of a reaction

iii) The units of second order rate constant are mol dm-3 s

-2

iv) The t1/2 of a first order reaction is independent of the initial concentration.​

Answer 1

Answer:

i

Explanation:

As temperature decreases rate also decreases

Answer 2

Answer:

i)

Explanation:

As a rule of thumb, reaction rates for many reactions double for every 10 degrees Celsius increase in temperature, For a given reaction, the ratio of its rate constant at a higher temperature to its rate constant at a lower temperature is known as its temperature coefficient (Q).