Table of Contents
- 1 What is the expression for second order reaction?
- 2 What is the equation for relating concentration to time for a second order reaction?
- 3 How do you solve a second order reaction?
- 4 How do you calculate reaction order from concentration and time?
- 5 What is order of reaction explain different types of order of reaction?
- 6 What are the units for second order reaction?
What is the expression for second order reaction?
Second order reactions can be defined as chemical reactions wherein the sum of the exponents in the corresponding rate law of the chemical reaction is equal to two. The rate of such a reaction can be written either as r = k[A]2, or as r = k[A][B].
What is the equation for relating concentration to time for a second order reaction?
Given the following information, determine the order of the reaction and the value of k, the reaction constant. 2….Practice Problems.
| Concentration (M) | Time (s) |
|---|---|
| 1.3 | 10 |
| 0.9633 | 20 |
Does second order reaction depends on the initial concentration?
A second-order reaction will depend on the concentration (s) of one second-order reactant or two first-order reactants. To determine the order of a reaction with respect to each reactant, we use the method of initial rates.
What is the order of a reaction give one example of a second order reaction?
Second-order reactions generally have the form 2A → products or A + B → products. Simple second-order reactions are common. In addition to dimerization reactions, two other examples are the decomposition of NO2 to NO and O2 and the decomposition of HI to I2 and H2.
How do you solve a second order reaction?
The integrated rate law for the second-order reaction A → products is 1/[A]_t = kt + 1/[A]_0. Because this equation has the form y = mx + b, a plot of the inverse of [A] as a function of time yields a straight line. The rate constant for the reaction can be determined from the slope of the line, which is equal to k.
How do you calculate reaction order from concentration and time?
Take three consecutive points from the concentration versus time data. Calculate ΔyΔx for the first and second points. The concentration is the y value, while time is the x value. Do the same for the second and third point.
What is first-order and second order reaction?
A zero-order reaction proceeds at a constant rate. A first-order reaction rate depends on the concentration of one of the reactants. A second-order reaction rate is proportional to the square of the concentration of a reactant or the product of the concentration of two reactants.
What are the units of second order reaction?
Unit of reaction rate (r) is moles per liter per second (mol. L-1. s-1) and the unit of second order rate constant is M-1. s-1 (M is molarity which can be expressed as mol/L).
What is order of reaction explain different types of order of reaction?
The order of a chemical reaction with respect to each reactant is defined as the exponent to which the concentration term of that reactant, in the rate law, is raised. The overall order of the reaction is defined as the sum of the exponents to which the concentration terms in the rate law are raised.
What are the units for second order reaction?
The units of k for a zero-order reaction are M/s, the units of k for a first-order reaction are 1/s, and the units of k for a second-order reaction are 1/(M·s).