Question

part d
carry out the investigation you planned. record your data in the table. in the observation column, record the amount of bubbles you see.
amount of baking soda amount of vinegar observation of bubbles

Explanation:

To complete this investigation, we can design a simple experiment by varying the amount of baking soda while keeping the amount of vinegar constant (or vice - versa) and observing the number of bubbles. Here is an example of how the data table could be filled:

Amount of Baking Soda	Amount of Vinegar	Observation of Bubbles
2 teaspoons	50 mL	A large number of bubbles
3 teaspoons	50 mL	A very large number of bubbles (may start to slow down as reactants are used up)

of the Experiment:

• Step 1: Prepare the materials

Gather baking soda, vinegar, measuring spoons, a measuring cup, and a container for the reaction (like a beaker).

• Step 2: Conduct the first trial

Measure 1 teaspoon of baking soda and 50 mL of vinegar. Pour the vinegar into the container and then add the baking soda. Immediately start observing the number of bubbles formed and record your observation (e.g., "Moderate number of bubbles") in the table.

• Step 3: Conduct the second trial

Measure 2 teaspoons of baking soda and 50 mL of vinegar. Repeat the process of adding the baking soda to the vinegar and record the observation of the bubbles (e.g., "A large number of bubbles").

• Step 4: Conduct the third trial

Measure 3 teaspoons of baking soda and 50 mL of vinegar. Add the baking soda to the vinegar and record the observation of the bubbles (e.g., "A very large number of bubbles (may start to slow down as reactants are used up)").

The key here is that the reaction between baking soda (sodium bicarbonate, $\ce{NaHCO_3}$) and vinegar (acetic acid, $\ce{CH_3COOH}$) produces carbon dioxide gas ($\ce{CO_2}$), which is seen as bubbles. The amount of baking soda (the reactant) will affect the amount of product (carbon dioxide) formed, and thus the number of bubbles. As the amount of baking soda increases (while the amount of vinegar is constant), more carbon dioxide is produced initially, leading to more bubbles. However, as the amount of baking soda becomes relatively large compared to the vinegar, the vinegar (the other reactant) may start to get used up, and the rate of bubble production may slow down.

If you want to keep the amount of baking soda constant and vary the amount of vinegar, you can follow a similar process:

Amount of Baking Soda	Amount of Vinegar	Observation of Bubbles
2 teaspoons	50 mL	A large number of bubbles
2 teaspoons	70 mL	A very large number of bubbles (may start to slow down as reactants are used up)

In this case, as the amount of vinegar (the reactant) increases (while the amount of baking soda is constant), more carbon dioxide is produced initially, leading to more bubbles. And as the vinegar becomes in excess relative to the baking soda, the rate of bubble production may start to slow down as the baking soda gets used up.

Answer:

of the Experiment:

• Step 1: Prepare the materials

Gather baking soda, vinegar, measuring spoons, a measuring cup, and a container for the reaction (like a beaker).

• Step 2: Conduct the first trial

Measure 1 teaspoon of baking soda and 50 mL of vinegar. Pour the vinegar into the container and then add the baking soda. Immediately start observing the number of bubbles formed and record your observation (e.g., "Moderate number of bubbles") in the table.

• Step 3: Conduct the second trial

Measure 2 teaspoons of baking soda and 50 mL of vinegar. Repeat the process of adding the baking soda to the vinegar and record the observation of the bubbles (e.g., "A large number of bubbles").

• Step 4: Conduct the third trial

Measure 3 teaspoons of baking soda and 50 mL of vinegar. Add the baking soda to the vinegar and record the observation of the bubbles (e.g., "A very large number of bubbles (may start to slow down as reactants are used up)").

The key here is that the reaction between baking soda (sodium bicarbonate, $\ce{NaHCO_3}$) and vinegar (acetic acid, $\ce{CH_3COOH}$) produces carbon dioxide gas ($\ce{CO_2}$), which is seen as bubbles. The amount of baking soda (the reactant) will affect the amount of product (carbon dioxide) formed, and thus the number of bubbles. As the amount of baking soda increases (while the amount of vinegar is constant), more carbon dioxide is produced initially, leading to more bubbles. However, as the amount of baking soda becomes relatively large compared to the vinegar, the vinegar (the other reactant) may start to get used up, and the rate of bubble production may slow down.

If you want to keep the amount of baking soda constant and vary the amount of vinegar, you can follow a similar process:

Amount of Baking Soda	Amount of Vinegar	Observation of Bubbles
2 teaspoons	50 mL	A large number of bubbles
2 teaspoons	70 mL	A very large number of bubbles (may start to slow down as reactants are used up)

In this case, as the amount of vinegar (the reactant) increases (while the amount of baking soda is constant), more carbon dioxide is produced initially, leading to more bubbles. And as the vinegar becomes in excess relative to the baking soda, the rate of bubble production may start to slow down as the baking soda gets used up.