Question

The order of reaction is decided by

• A. temperature
• B. mechanism of reaction as well as relative concentration of reactants
• C. molecularity
• D. pressure

Hint:

Rate-determining step is another name for the mechanism's slowest step in a chemical process.

Answer 1

The Correct Option is B

The correct answer is Option B) mechanism of reaction as well as relative concentration of reactants 

Both an integer and a fraction can be used to describe the order of the reaction. Even a value of zero is conceivable for it.

• In the case of a complex reaction, the total power of the reactants on the slowest path determines the order of the reaction.
• Add the relative concentrations of the reactants to determine the order if the power of the reactants and the relative concentration of the reactants are identical.
• Rate-determining step is another name for the mechanism's slowest step in a chemical process.
• Understanding the reaction's mechanism is crucial to identifying the rate-determining phase.

Discover More Topics From This Chapter: Order of Reaction

 

Answer 2

The correct answer is Option B) mechanism of reaction as well as relative concentration of reactants 

Real Life Applications

Our bodily system involves several biological processes. Our lives may be in jeopardy if a biological response occurs in our body too quickly or too slowly. The improvement of our body's rate of reaction has been the subject of several research. To combat a particular ailment, for instance, a medicine's rate of action in our bodies must be optimised. It is necessary to ensure that the reaction is slower if the drug will produce heat during its bodily reaction. This will prevent the patient from experiencing high blood pressure when taking the prescription. archaeological artefacts' dating. In order to date archaeological artefacts like bones or wood, the sequence of reaction is employed. This is accomplished by counting how much of a radioactive isotope has depleted over time. The sequence of reactions determines the rate of decay. the enhancement of industrial procedures. Engineers can improve industrial processes, such as the synthesis of chemicals or polymers, by using the sequence of reaction. They can choose the ideal reaction conditions, such as temperature, pressure, and reactant concentration, by knowing the sequence of reaction.

Question can also be asked as

1. What factors determine the order of a chemical reaction? 
2. What is the relationship between the order of reaction and the mechanism of reaction? 
3. How does the relative concentration of reactants affect the order of reaction? 
4. What is the difference between the order of reaction and the molecularity of a reaction?

Answer 3

The correct answer is Option B) mechanism of reaction as well as relative concentration of reactants 

• The degree to which the reaction rate depends on the concentration of the reactants determines the order of a reaction.
• It displays the species concentrations that have an impact on the reaction rate.
• The order of the reaction is established by adding the exponentials of the reactants in the rate equation.
• When determining the reaction's sequence, the concentration of the reactants is taken into account.
• The sequence in which the reaction takes place is not governed by the product concentration.
• A reaction's order might be 0, an integer, or a fraction.
• The inverse connection between the concentration of the reactants and the rate of a reaction is represented by the negative value of the integer for the order of the reaction.
• The positive value of the integer indicating the order of a reaction shows a direct correlation between the rate of a reaction and the concentration of the reactants.
• The fact that the order of the reaction is zero shows that there is no link between the rate of a reaction and the concentration of the reactants.
• The fractional value of the order of the reaction illustrates the complicated interaction between reactant concentration and reaction rate.

Formula of Rate of Reaction

For the reaction, aA + bB → cC + dD

Here, the terms "reactants" (A and B) and "products" (C and D) are used. 

• Stoichiometric coefficients are shown as a, b, d, and d.
• The IUPAC defines the reaction rate r, which occurs in a closed system under isochoric circumstances without the creation of reaction intermediates, as follows:

Also Read: 

Related Topics
Rate of a Chemical Reaction	Half Life	Integrated Rate Equatations