COMEDK2024Morning ShiftChemistryChemical KineticsActual
Given below are 4 graphs [A], [B], [C] and [D] Identify the 2 graphs that represent a Zero order reaction?
Options
- A[C] and [D]
- B[B] and [C]
- C[A] and [B]
- D[A] and [D]
Correct answer
A. [C] and [D]
Step-by-step solution
For a zero order reaction, the rate law is given by Rate = k[R]^0 = k . This implies that the rate of the reaction is independent of the concentration of the reactant [R] . Thus, a plot of Rate versus [R] is a horizontal straight line, which corresponds to graph [D]. The integrated rate equation for a zero order reaction is [R] = -kt + [R]₀ . This is in the form of a linear equation y = mx + c , where y = [R] , x = t , m = -k , and c = [R]₀ . Therefore, a plot of [R] versus time is a straight line with a negative s