What is a first and second order reaction?

The simplest kind of second-order reaction is one whose rate is proportional to the square of the concentration of one reactant. A second kind of second-order reaction has a reaction rate that is proportional to the product of the concentrations of two reactants. Such reactions generally have the form A + B → products.

Keeping this in view, what are first and second order effects?

Every action has a consequence, and each consequence has another consequence. These are called Second-Order Effects. Every change you make to a system will have Second-Order Effects, which may affect the system's functionality. Be careful when making changes, they may have the opposite effect of what you aimed for.

What is the second order rate law?

Second Order Reactions are characterized by the property that their rate is proportional to the product of two reactant concentrations (or the square of one concentration).

What is the unit of second order reaction?

Case 1: Identical Reactants. Two of the same reactant (A) combine in a single elementary step. where k is a second order rate constant with units of M -1 min -1 or M -1 s -1. Therefore, doubling the concentration of reactant A will quadruple the rate of the reaction.