The law which indicates the relationship between solubility of a gas in liquid and pressure is ____

Options

A. Raoult's law
B. Henry's law
C. Lowering of vapour pressure
D. van't Hoff law

Answer

To solve the question regarding the law that indicates the relationship between the solubility of a gas in a liquid and pressure, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a specific law that relates the solubility of a gas in a liquid to the pressure exerted by that gas above the liquid.

2. **Identifying Relevant Concepts**: We need to recall the laws related to gas solubility. The most relevant law in this context is Henry's Law.

3. **Stating Henry's Law**: Henry's Law states that the solubility (S) of a gas in a liquid is directly proportional to the partial pressure (P) of that gas above the liquid. This can be mathematically expressed as:
\[ S = k_H \cdot P \]
where \( k_H \) is Henry's law constant.

4. **Conclusion**: Based on the understanding of Henry's Law, we conclude that the law which indicates the relationship between the solubility of a gas in a liquid and pressure is **Henry's Law**.

### Final Answer:
The law which indicates the relationship between the solubility of a gas in liquid and pressure is **Henry's Law**.

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