Catalysis and Enzymatic Reactions
Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.
Lock And Key Model
The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.
![**Derive the rate equation.**
- ○ Rate = \( k[\text{CO}]^2[\text{NO}_2]^2 \)
- ○ Rate = \( k \)
- ○ Rate = \( k[\text{CO}][\text{NO}_2] \)
- ○ Rate = \( k[\text{CO}][\text{NO}_2]^2 \)
In this multiple-choice question, students are asked to derive the correct rate equation from the given options. Each option presents a different mathematical expression for the rate of a chemical reaction involving carbon monoxide (CO) and nitrogen dioxide (NO\(_2\)). The \( k \) symbol represents the rate constant, while the terms in brackets represent the concentrations of the reactants. The exponents denote the order of the reaction with respect to each reactant.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd32c0099-d35b-45af-b7af-24c06e9e82b9%2F0f181cda-0138-4581-9afb-b9f32be8c435%2F8rd1rpj_processed.png&w=3840&q=75)
![### Reaction Rate Data Analysis
This table presents data collected at a temperature of 540 K for the chemical reaction:
\[ \text{CO(g) + NO}_2\text{(g) → CO}_2\text{(g) + NO(g)} \]
#### Table Overview
The table is divided into two main columns:
1. **Initial Concentration (mol/L)**
- \([ \text{CO} ]\): Represents the initial concentration of carbon monoxide.
- \([ \text{NO}_2 ]\): Represents the initial concentration of nitrogen dioxide.
2. **Initial Rate (mol/L·h)**
- Indicates the rate of the reaction at the given initial concentrations.
#### Detailed Data
| \([ \text{CO} ]\) (mol/L) | \([ \text{NO}_2 ]\) (mol/L) | Initial Rate (mol/L·h) |
|-----------------------|-----------------------|---------------------------|
| \(5.1 \times 10^{-4}\) | \(0.35 \times 10^{-4}\) | \(5.0 \times 10^{-8}\) |
| \(5.1 \times 10^{-4}\) | \(0.70 \times 10^{-4}\) | \(1.0 \times 10^{-7}\) |
| \(5.1 \times 10^{-4}\) | \(0.18 \times 10^{-4}\) | \(2.6 \times 10^{-8}\) |
| \(1.0 \times 10^{-3}\) | \(0.35 \times 10^{-4}\) | \(9.8 \times 10^{-8}\) |
| \(1.5 \times 10^{-3}\) | \(0.35 \times 10^{-4}\) | \(1.5 \times 10^{-7}\) |
This data can be used to analyze how changes in the concentrations of reactants affect the initial rate of the reaction.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd32c0099-d35b-45af-b7af-24c06e9e82b9%2F0f181cda-0138-4581-9afb-b9f32be8c435%2F2ix02km_processed.png&w=3840&q=75)
we have to determine the rate law expression for the given reaction
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