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

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

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

3. What other substances are produced during this process?

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

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

5.1. Will the flame be extinguished faster?

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

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

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