Why does the candle go out when baking powder is mixed with vinegar?

1. What other substances when mixed together will produce carbon dioxide?

2. What other substances are produced during this process?

3. What will happen if there is a cap on the jar?

3.1. Will the flame be extinguished faster?

3.2. Will the cap pop out due to the pressure in the jar?

3.3. Will the jar break due to the pressure in the jar?

4. If a larger jar is used, will the candle burn longer if the same amount of baking powder and vinegar is used?

5. If baking soda is used instead of baking powder, will the outcome of the experiment be the same?

6. Is there a way to allow the flame to continue burning even if the baking powder and vinegar are present?