A gas pak in an anaerobic jar:
-contains sodium bicarbonate
-removes oxygen from the air inside the jar
-induces the formation of water molecules
-all of the above are true
All of the above are true.
All of the above are true. A gas pak in an anaerobic jar typically contains sodium bicarbonate, which reacts with water to produce carbon dioxide gas. This carbon dioxide gas removes oxygen from the air inside the jar, creating an anaerobic environment. Additionally, the reaction between sodium bicarbonate and water also induces the formation of water molecules.
The correct answer is "all of the above are true."
A gas pak in an anaerobic jar is designed to create an oxygen-free environment. It typically consists of a packet that contains sodium bicarbonate (also known as baking soda) and an additional component such as iron or activated charcoal.
Here's how the process works:
1. Sodium bicarbonate: The gas pak contains sodium bicarbonate, which is a chemical compound that reacts with water and carbon dioxide (CO2) to produce sodium ions, bicarbonate ions, and hydrogen ions. This chemical reaction helps to remove oxygen from the air inside the jar.
2. Removal of oxygen: When the gas pak is activated by adding water, the sodium bicarbonate reacts with any remaining oxygen in the jar, converting it into carbon dioxide and water. The carbon dioxide is then absorbed by the additional component of the gas pak (e.g., iron or activated charcoal).
3. Inducing the formation of water molecules: The reaction between sodium bicarbonate and water not only helps remove oxygen but also results in the formation of water molecules. This process aids in maintaining a humid environment inside the anaerobic jar, which is important for the growth of certain microorganisms that require low oxygen levels.
Therefore, all three statements (contains sodium bicarbonate, removes oxygen from the air inside the jar, induces the formation of water molecules) are true when describing a gas pak in an anaerobic jar.