For the reaction `AtoB`, the rate of reaction becomes three times when the concentration of A is increased by nine times. What is the order of reaction ?

Explanation

To determine the order of the reaction \( A \to B \), we can follow these steps:

### Step 1: Write the rate equation
The rate of a reaction can be expressed as:
\[ \text{Rate} = k [A]^\alpha \]
where \( k \) is the rate constant, \( [A] \) is the concentration of reactant A, and \( \alpha \) is the order of the reaction.
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