Certainly! Let's proceed with the detailed step-by-step solution based on your given scenario.
### Experimental Setup:
1. Material:
- Solid D
- Dry test tube
- Heat source (like a Bunsen burner)
- Blue litmus paper
- Tongs or test tube holder
### Procedure:
1. Obtain about one-half of the solid D sample and place it in a dry test tube.
2. Secure the test tube using a test tube holder or tongs.
3. Heat the test tube strongly using the heat source.
4. As the solid D is being heated, carefully place a piece of blue litmus paper near the mouth of the test tube to test the gas that may be produced.
### Observations:
- While heating, observe any changes in the solid and any gas released.
- Keep an eye on the blue litmus paper to see if it undergoes any color change.
### Observed Result:
- Blue litmus paper turns red.
### Conclusion:
Based on the observation, we can deduce that the gas produced during the heating of solid D is acidic in nature. This is concluded because blue litmus paper turns red in the presence of an acidic gas.
### Explanation:
- Litmus paper is a common indicator used in chemistry to identify whether a substance is acidic or basic.
- Blue litmus paper turns red when exposed to acidic conditions.
### Summary:
1. Solid D was heated in a test tube.
2. The gas produced from heating the solid was tested using blue litmus paper.
3. The blue litmus paper turned red, indicating that the gas is acidic.
### Answer:
- Observation: Blue litmus paper turns red.
- Conclusion: The gas produced is acidic in nature.
Thus, the experiment confirms the presence of an acidic gas produced from heating solid D based on the litmus paper's reaction.
