Given the reaction shown below and its corresponding graph, which line represents represents ammonia : 2NH3(g)→N2(g)+3H2(g) a. blue b. yellow c. none of these d. red e. any of these could represent the compound

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Given the reaction shown below and its corresponding graph, which line represents represents ammonia :

2NH3(g)→N2(g)+3H2(g)

a. blue

b. yellow

c. none of these

d. red

e. any of these could represent the compound

 

### Concentration vs. Time: Understanding Reaction Kinetics

The following graph presents the concentration profiles of three different species over a period of 400 seconds. The concentrations of these species are plotted on the y-axis (in mol/L), while the time is represented on the x-axis (in seconds).

#### Key Features of the Graph

1. **Species 1 (Blue Curve)**:
   - Initially, species 1 has the highest concentration at approximately 0.009 mol/L.
   - Over time, the concentration of species 1 decreases steadily.
   - By the end of 400 seconds, its concentration appears to be around 0.001 mol/L.
   
2. **Species 2 (Red Curve)**:
   - Species 2 starts with a concentration of 0 mol/L.
   - As time progresses, the concentration of species 2 increases rapidly.
   - At around 150 seconds, the concentration of species 2 peaks at approximately 0.006 mol/L.
   - Following this peak, the concentration of species 2 begins to gradually decrease and levels off towards the end of the observed period.

3. **Species 3 (Yellow Curve)**:
   - The initial concentration of species 3 is 0 mol/L.
   - The concentration of species 3 increases throughout the duration of the experiment albeit at a slower rate compared to species 2.
   - At the end of the 400 seconds, the concentration of species 3 reaches just under 0.004 mol/L.
   
#### Analysis

- **Initial Phase (0-50 seconds)**:
  - Species 1 concentration decreases sharply.
  - Species 2 and species 3 concentrations start to rise from zero.

- **Mid Phase (50-200 seconds)**: 
  - Species 1 continues to decline.
  - Species 2 reaches its peak concentration around 150 seconds and then begins to decrease.
  - Species 3 shows a steady increase.

- **Final Phase (200-400 seconds)**:
  - Species 1 concentration stabilizes at a low level.
  - Species 2 concentration decreases and plateaus.
  - Species 3 continues to increase but at a diminished rate.

#### Conclusion

This graph is indicative of a multi-step reaction where species 1 is likely a reactant, species 2 an intermediate, and species 3 a product. The transition of concentration profiles helps in understanding the kinetics of the reaction and the relationships between the
Transcribed Image Text:### Concentration vs. Time: Understanding Reaction Kinetics The following graph presents the concentration profiles of three different species over a period of 400 seconds. The concentrations of these species are plotted on the y-axis (in mol/L), while the time is represented on the x-axis (in seconds). #### Key Features of the Graph 1. **Species 1 (Blue Curve)**: - Initially, species 1 has the highest concentration at approximately 0.009 mol/L. - Over time, the concentration of species 1 decreases steadily. - By the end of 400 seconds, its concentration appears to be around 0.001 mol/L. 2. **Species 2 (Red Curve)**: - Species 2 starts with a concentration of 0 mol/L. - As time progresses, the concentration of species 2 increases rapidly. - At around 150 seconds, the concentration of species 2 peaks at approximately 0.006 mol/L. - Following this peak, the concentration of species 2 begins to gradually decrease and levels off towards the end of the observed period. 3. **Species 3 (Yellow Curve)**: - The initial concentration of species 3 is 0 mol/L. - The concentration of species 3 increases throughout the duration of the experiment albeit at a slower rate compared to species 2. - At the end of the 400 seconds, the concentration of species 3 reaches just under 0.004 mol/L. #### Analysis - **Initial Phase (0-50 seconds)**: - Species 1 concentration decreases sharply. - Species 2 and species 3 concentrations start to rise from zero. - **Mid Phase (50-200 seconds)**: - Species 1 continues to decline. - Species 2 reaches its peak concentration around 150 seconds and then begins to decrease. - Species 3 shows a steady increase. - **Final Phase (200-400 seconds)**: - Species 1 concentration stabilizes at a low level. - Species 2 concentration decreases and plateaus. - Species 3 continues to increase but at a diminished rate. #### Conclusion This graph is indicative of a multi-step reaction where species 1 is likely a reactant, species 2 an intermediate, and species 3 a product. The transition of concentration profiles helps in understanding the kinetics of the reaction and the relationships between the
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