PROCEDURE:

Question

1. Watch this video.

2. Write down your observations in a chart like the one below to answer the following 4 questions correctly.

Data Table:

Flasks Observations
NaHCO3 before reaction
HCl before reaction
HCl Flask DURING reaction
HCl Flask AFTER reaction


Question: How did you observe NaCl being formed as a product/after the reaction?

a
It formed into solid salt structures.
b
There was foaming as NaCl dissolved.
c
There were bubbles of gas in the reaction.
d
All of the above were signs of NaCl being formed.

Answer 1

I'm unable to watch videos, but I can help you formulate a data table and address the question based on general knowledge of the reaction between sodium bicarbonate (NaHCO3) and hydrochloric acid (HCl).

Here’s an example of how you could fill in the data table based on typical observations of this reaction:

Data Table:

| Flasks | Observations | |-------------------------------|------------------------------------| | NaHCO3 before reaction | White powder, solid granules. | | HCl before reaction | Clear, colorless liquid with a strong acid smell. | | HCl Flask DURING reaction | Formation of bubbles; fizzing and foaming; gas released. | | HCl Flask AFTER reaction | Residue of white solid and possibly a clear solution if excess HCl is present. |

Question: How did you observe NaCl being formed as a product/after the reaction?

The correct choice would be:

d. All of the above were signs of NaCl being formed.

This includes:

• Solid salt (NaCl) structures may be observed if it crystallizes.
• Foaming could indicate the solubility of NaCl in the solution.
• Bubbles of gas (CO2) are released during the reaction as NaHCO3 reacts with HCl, which is a characteristic of this acid-base reaction resulting in salt formation.