For a reaction `AtoB`, the rate of reaction can be denoted by `-(dA)/(dt)" or "+(dB)/(dt)`. State the significance of plus and minus signs in this case.

Explanation

To understand the significance of the plus and minus signs in the rate expressions for the reaction \( A \to B \), we can break down the concepts step by step:

### Step 1: Understanding the Reaction
The reaction \( A \to B \) indicates that substance A is being converted into substance B. In chemical kinetics, we are interested in how fast this conversion occurs.

### Step 2: Defining the Rate of Reaction
The rate of a reaction can be expressed in terms of the change in concentration of reactants and products over time. For the reaction \( A \to B \), we can express the rate in two ways:
1. The rate of disappearance of A: \( -\frac{d[A]}{dt} \)
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