Which of the following graphs represent a first order reaction (a= initial concentration of reactant, x= concentration of reactant consumed, t= time ) ?

Question

Which of the following graphs represent a first order reaction (a= initial concentration of reactant, x= concentration of reactant consumed, t= time ) ? (A) (i), (ii), (iv) (B) (iii), (iv) (C) (ii), (iii) (D) (i), (ii)

Tardigrade Admin · Accepted Answer

For a first order reaction Rate =-(Δ[A]/Δ l)=k[A] It is a straight line plot with negative slope when concentration of reactant is considered as in (i) and half-life for first order is independent from concentration, as in plot (ii).

Q. Which of the following graphs represent a first order reaction $(a =$ initial concentration of reactant, $x =$ concentration of reactant consumed, $t =$ time $)$ ?

(i), (ii), (iv)

(iii), (iv)

(ii), (iii)

(i), (ii)

For a first order reaction

Rate $= - \frac{Δ [ A ]}{Δ l} = k [A]$

It is a straight line plot with negative slope when concentration of reactant is considered as in (i) and half-life for first order is independent from concentration, as in plot (ii).

Q. Which of the following graphs represent a first order reaction (a= initial concentration of reactant, x= concentration of reactant consumed, t= time ) ?