Name the law which deals with the ratios of the volumes of the gaseous reactants and products.

Answer

**Step-by-Step Solution:**

1. **Identify the Law**: The law that deals with the ratios of the volumes of gaseous reactants and products is known as **Gay-Lussac's Law**.

2. **Understanding the Law**: Gay-Lussac's Law states that when gases react together at constant temperature and pressure, the volumes of the gaseous reactants and products can be expressed in simple whole number ratios.

3. **Example of the Law**: To illustrate this, consider the reaction between hydrogen and chlorine gases:
\[ \text{H}_2(g) + \text{Cl}_2(g) \rightarrow 2 \text{HCl}(g) \]
In this reaction:
- 1 volume of hydrogen gas reacts with 1 volume of chlorine gas to produce 2 volumes of hydrogen chloride gas.

4. **Volume Ratio**: The volume ratio can be expressed as:
- Volume of H2 : Volume of Cl2 : Volume of HCl = 1 : 1 : 2.
This shows that the volumes of the gaseous reactants and products are in simple whole number ratios.

5. **Conclusion**: Therefore, the law that describes the volume ratios of gaseous reactants and products is Gay-Lussac's Law.

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