Which of the following graphs is correct for a zero order reaction?

Question

Philoid · Accepted Answer

for a zero-order reaction,

Rate=k[R]⁰

R is the molar concentration of reactants.

Hence the reaction rate remains constant with time and becomes zero when the concentration of reactants is zero.

At t=0, R=R₀ and at t=t, R=R, where R is the concentration of reactants at time t.

Integrating w.r.t. t on both side and putting limit we get,

[R]=-kt + [R₀]

Following an equation of a line with negative slope, hence the graph (iv) is correct.