Order reactions

[Kimberly Navarro 2G]

What factor is each order reaction (Zero, first and second) dependent on, what affects them and why?

[angelina]

Order is determined by the rate laws. Zero order is when rate of reaction does not change when the concentration of the reactants grows or decreases (as k[Br]^0 just equals 1. First order is when the rate only depends on one reactant like k[Br]. Second order is when rate is two reactants like k[Br]^2

[Myracle Franco 2G]

You determine orders of reaction by solving for your rate laws. They can be affected by time and concentrations, depending on the rate law. It would be best to also look at the examples of the order reaction graphs and see how their slopes affect their appearance.

[105561735]

The rate of a zero-order reaction is independent of the concentration of the reactant(s). Instead, it depends solely on the rate constant. The rate of a first-order reaction is directly proportional to the concentration of one reactant. It depends on the rate constant (k) and the concentration of the reactant. The rate of a second-order reaction is either directly proportional to the square of the concentration of one reactant (if it's unimolecular) or proportional to the product of the concentrations of two reactants (if it's bimolecular).