LAB 1: ALKA SELTZER REACTION

Question

PROCEDURE:
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

Data Table:

| Flasks | Observations | |-----------------------|---------------------------------------| | NaHCO3 before reaction| White crystalline powder, solid form | | HCl before reaction | Clear, colorless liquid | | HCl Flask DURING reaction | Bubbling and fizzing, formation of gas bubbles, reaction appeared vigorous | | HCl Flask AFTER reaction | Solution became clear with no visible solids, possible residue at the bottom |

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

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

Explanation: During the reaction, you would observe bubbling and fizzing (release of gas, likely CO2), along with a clear liquid after the reaction, indicating that NaCl was formed and dissolved in the solution. The production of gas could also suggest the formation of NaCl as byproducts of the acid-base reaction.