Q. 31

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



B.



C.



D.



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.

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