Question

The given graph is a representation of kinetics of a reaction.

The $y$ and $x$ axes for zero and first order reactions, respectively are

• A. zero order ( $y=$ rate and $x=$ concentration), first order $\left(y=\right.$ rate and $\left.x= t _{1 / 2}\right)$
• B. zero order ( $y=$ concentration and $x=$ time), first order ( $y= t _{1 / 2}$ and $x=$ concentration)
• C. zero order ( $y=$ concentration and $x=$ time), first order $(y=$ rate constant and $x=$ concentration)
• D. zero order ( $y=$ rate and $x=$ concentration), first order $\left(y= t _{1 / 2}\right.$ and $x=$ concenration $)$

Answer 1

Answer: (C)

(I) curve is suitable for zero order if $y=$ rate and $x =$ concentration because in case of zero order reaction rate is constant and does not depend on conc $^{ n }$.
(II) curve is suitable for first order if $y=t_{1 / 2}$ and $x=$ conc $^{n}$ because in case of first order $t_{1 / 2}$ does not depend on conc $^{ n }$.