Potassium carbonate when heated to high temperature.

Options

A. Gives `CO_(2)`
B. Gives `O_(2)`
C. Gives `CO`
D. Gives no gas at all

Answer

**Step-by-Step Solution:**

1. **Understanding Potassium Carbonate (K2CO3):**
- Potassium carbonate is a salt composed of potassium ions (K⁺) and carbonate ions (CO3²⁻).

2. **Heating Potassium Carbonate:**
- When potassium carbonate is heated to high temperatures, it undergoes changes.

3. **Temperature Consideration:**
- The melting point of potassium carbonate is around 891 Kelvin. At this temperature, it transitions from a solid to a liquid state.

4. **Behavior Upon Heating:**
- Upon heating, potassium carbonate does not decompose into other products or release gases. Instead, it simply melts and becomes a liquid.

5. **Conclusion:**
- Therefore, the correct observation is that potassium carbonate, when heated to high temperatures, melts without producing any gas.

6. **Final Answer:**
- The correct option is D, indicating that no gas is produced when potassium carbonate is heated.

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