Question

Identify the correct statements about order of reaction:
I) It is equal to the sum of the powers of concentration terms in rate equation
II) It is always a whole number
III) It is determined experimentally
IV) It is not applicable for complex reactions

• A. I \& II only
• B. II \& III only
• C. I \& III only
• D. II \& IV only

Hint:

Order of reaction is experimental and not always a whole number.

Answer 1

The Correct Option is C

- Statement I is correct: order of reaction is the sum of powers of concentration in the rate law.
- Statement II is incorrect: it can be fractional or zero.
- Statement III is correct: order is found by experimental data, not by reaction stoichiometry.
- Statement IV is incorrect: it is applicable to all reactions, though mechanisms might be complex.