5. A water trough, aqueous sodium hydroxide, burning candle, watch glass, and a graduated gas jar were used in an experimental setup to determine the percentage of the active part of air. Draw a labeled diagram of the setup at the end of the experiment. (3 marks)

6. Explain how the hotness of a Bunsen burner flame can be increased.

Question

12-08-2024
Chemistry

Answered

5. A water trough, aqueous sodium hydroxide, burning candle, watch glass, and a graduated gas jar were used in an experimental setup to determine the percentage of the active part of air. Draw a labeled diagram of the setup at the end of the experiment. (3 marks)

6. Explain how the hotness of a Bunsen burner flame can be increased.

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-08-12T00:17:02-04:00

Final answer:

The response provides a labeled diagram of the experimental setup used to determine the percentage of the active part of air and explains how to increase the hotness of a Bunsen burner flame in a lab setting.

Explanation:

Labeled Diagram of Experimental Setup:

A water trough containing aqueous sodium hydroxide is placed on one side with a burning candle. On the other side, a watch glass is placed to capture a gas. A graduated gas jar is inverted in the water trough to collect the gas being released. The candle is burned, and the volume of gas collected is used to determine the percentage of the active part of air.

Increasing Bunsen Burner Hotness:

The hotness of a Bunsen burner flame can be increased by adjusting the gas flow rate and the air supply ratio. By increasing the gas flow rate and adjusting the air supply to have a higher oxygen concentration, the Bunsen burner flame can become hotter and more efficient for heating substances in a lab setting.

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