# How do you find the rate law for a reaction?

Table of Contents

- 1 How do you find the rate law for a reaction?
- 2 How do you determine if a reaction is first or second order from a graph?
- 3 How do you determine the order of a reaction from experimental data?
- 4 How do you determine reaction order?
- 5 How do you solve rate problems?
- 6 How do I calculate interest rate?
- 7 How do you find the rate law from concentration and time?
- 8 How do you find the rate law from a graph?
- 9 Does the rate constant depend on the concentration of reactant?

## How do you find the rate law for a reaction?

A rate law shows how the rate of a chemical reaction depends on reactant concentration. For a reaction such as aA → products, the rate law generally has the form rate = k[A]ⁿ, where k is a proportionality constant called the rate constant and n is the order of the reaction with respect to A.

### How do you determine if a reaction is first or second order from a graph?

If you get a straight line with a negative slope, then that would be first order. For second order, if you graph the inverse of the concentration A versus time, you get a positive straight line with a positive slope, then you know it’s second order.

#### How do you determine the order of a reaction from experimental data?

Either the differential rate law or the integrated rate law can be used to determine the reaction order from experimental data. Often, the exponents in the rate law are the positive integers: 1 and 2 or even 0. Thus the reactions are zeroth, first, or second order in each reactant.

**How do you find the rate?**

Use the formula r = d/t. Your rate is 24 miles divided by 2 hours, so: r = 24 miles ÷ 2 hours = 12 miles per hour.

**How do you know if its a 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].

## How do you determine reaction order?

The overall order of the reaction is found by adding up the individual orders. For example, if the reaction is first order with respect to both A and B (a = 1 and b = 1), the overall order is 2.

### How do you solve rate problems?

All rate problems can be solved by using the formula D = R(T), which translates to distance (D) equals rate (R) multiplied by time (T).

#### How do I calculate interest rate?

The principal amount is Rs 10,000, the rate of interest is 10\% and the number of years is six. You can calculate the simple interest as: A = 10,000 (1+0.1*6) = Rs 16,000. Interest = A – P = 16000 – 10000 = Rs 6,000.

**How do I calculate a rate?**

If you have a rate, such as price per some number of items, and the quantity in the denominator is not 1, you can calculate unit rate or price per unit by completing the division operation: numerator divided by denominator.

**How do you determine the rate law for a reaction?**

In order to determine the rate law for a reaction from a set of data consisting of concentration (or the values of some function of concentration) versus time, make three graphs. The graph that is linear indicates the order of the reaction with respect to A. Then, you can choose the correct rate equation:

## How do you find the rate law from concentration and time?

Rate Laws from Graphs of Concentration Versus Time (Integrated Rate Laws) In order to determine the rate law for a reaction from a set of data consisting of concentration (or the values of some function of concentration) versus time, make three graphs. [A] versus t (linear for a zero order reaction) ln [A] versus t (linear for a 1storder reaction)

### How do you find the rate law from a graph?

Rate Laws from Graphs of Concentration Versus Time (Integrated Rate Laws) In order to determine the rate law for a reaction from a set of data consisting of concentration (or the values of some function of concentration) versus time, make three graphs. [A] versus t (linear for a zero order reaction)

#### Does the rate constant depend on the concentration of reactant?

The rate constant k is independent of the concentration of A, B, or C, but it does vary with temperature and surface area. The exponents in a rate law describe the effects of the reactant concentrations on the reaction rate and define the reaction order. Consider a reaction for which the rate law is: