Which reaction gives more products as a result of increase in pressure :

Options

A. `2Hi iff H_(2) +I_(2)`
B. `2SO_(2)+O_(2) iff 2SO_(3)`
C. `H_(2)O+CO iff H_(2)+CO_(2)`
D. `H_(2)+Br_(2)iff 2HBr `

Explanation

To determine which reaction produces more products as a result of an increase in pressure, we can apply Le Chatelier's principle. This principle states that if a system at equilibrium is subjected to a change in pressure, temperature, or concentration, the system will adjust to counteract that change and restore a new equilibrium.

**Step-by-step solution:**

1. **Identify the reactions:** We need to analyze the given reactions to determine the number of gaseous molecules on both the reactant and product sides.

2. **Count the gaseous molecules:**
- For each reaction, count the number of gaseous molecules on the reactant side and the product side.

3. **Apply Le Chatelier's principle:**
- According to Le Chatelier's principle, if we increase the pressure, the equilibrium will shift towards the side with fewer gaseous molecules. This means that if the product side has fewer gaseous molecules than the reactant side, the reaction will favor the formation of products.

4. **Analyze each option:**
- **Option 1:** If there are 2 gaseous molecules on the reactant side and 2 on the product side, the pressure change will not affect the equilibrium (same number of molecules).
- **Option 2:** If there are 3 gaseous molecules on the reactant side and 2 on the product side, increasing pressure will shift the equilibrium towards the product side, resulting in more products.
- **Option 3:** If there are 2 gaseous molecules on both sides, similar to Option 1, the pressure change will not affect the equilibrium.
- **Option 4:** Again, if there are 2 gaseous molecules on both sides, the equilibrium will remain unchanged with respect to pressure.

5. **Conclusion:** The only reaction that will yield more products due to an increase in pressure is the second option, where the product side has fewer gaseous molecules than the reactant side.

**Final Answer:** The reaction that gives more products as a result of an increase in pressure is the second option.

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