Question

For the substances we will test in this experiment, use your knowledge of these substances to make a prediction about which ones you think will be strong electrolytes, weak electrolytes, or non-electrolytes. Be sure to indicate a rationale for your choices.

1. distilled water
2. sodium chloride solution
3. glycerol solution
4. acetic acid solution
5. calcium chloride solution
6. sucrose solution
7. hydrochloric acid solution
8. ethanol solution
9. simulated urine solution

Answer 1

Here are my predictions for each of the substances based on their properties:

Distilled water - Non-electrolyte. Distilled water is a pure substance and does not contain any ionic compounds or free ions.
Sodium chloride solution - Strong electrolyte. Sodium chloride is an ionic compound that dissociates completely into its constituent ions when dissolved in water.
Glycerol solution - Non-electrolyte. Glycerol is a molecular compound and does not dissociate into ions when dissolved in water.
Acetic acid solution - Weak electrolyte. Acetic acid is a weak acid that dissociates only partially into its constituent ions when dissolved in water.
Calcium chloride solution - Strong electrolyte. Calcium chloride is an ionic compound that dissociates completely into its constituent ions when dissolved in water.
Sucrose solution - Non-electrolyte. Sucrose is a molecular compound and does not dissociate into ions when dissolved in water.
Hydrochloric acid solution - Strong electrolyte. Hydrochloric acid is a strong acid that dissociates completely into its constituent ions when dissolved in water.
Ethanol solution - Non-electrolyte. Ethanol is a molecular compound and does not dissociate into ions when dissolved in water.
Simulated urine solution - This will depend on the specific composition of the simulated urine solution. However, urine typically contains a variety of dissolved ions and compounds, including electrolytes like sodium and potassium ions. Therefore, I would predict that simulated urine solution is likely to be a strong electrolyte.