The rate of a certain reaction at different times is as follows
`{:("Time",0,10,20,30),("Rate",3.2 xx 10^(-2), 3.18 xx 10^(-2), 3.22 xx 10^(-2), 3.19 xx 10^(-2)):}`
The order of the reaction is

Options

A. 1
B. zero
C. 2
D. 3

Explanation

To determine the order of the reaction based on the provided rate data at different times, we can follow these steps:

### Step 1: Organize the Data
First, we will organize the given data into a more readable format:

| Time (s) | Rate (mol/L/s) |
|----------|----------------------|
| 0 | 3.2 x 10^(-2) |
| 10 | 3.18 x 10^(-2) |
| 20 | 3.22 x 10^(-2) |
| 30 | 3.19 x 10^(-2) |

### Step 2: Analyze the Rate Values
Next, we will analyze the rate values. The rates at different times are:

- At time 0: 3.2 x 10^(-2)
- At time 10: 3.18 x 10^(-2)
- At time 20: 3.22 x 10^(-2)
- At time 30: 3.19 x 10^(-2)

We can see that the rates are very close to each other, indicating that they are nearly constant.

### Step 3: Determine the Relationship Between Rate and Concentration
For a zero-order reaction, the rate of reaction is independent of the concentration of the reactants. This means that even as time progresses and the concentration of the reactants decreases, the rate remains constant.

### Step 4: Conclusion
Since the rate does not change significantly with time and remains approximately constant, we can conclude that the reaction is a **zero-order reaction**.

### Final Answer
The order of the reaction is **zero**.

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