Answer:
Zero order
Explanation:
Reaction rate for experiment 1 =
1.496 - 1.512 / 30 - 0 = - 5.3 * 10^-4 Ms-1
Reaction rate for experiment 2
2.552 - 2.584/60 - 0 = - 5.3 * 10^-4 Ms-1
So,
Since the rate of reaction does not change with change in concentration of reactants (identified by the fact that the rates of reaction 1 and reaction 2 are the same), the reaction is zero order.