pH Lab

Must wear goggles at all times.(One warning, then 5 points deducted per occurrence)

pH Lab

1. Use all paper indicators to determine the approximate pH of water as well as HCl and NaOH solutions. 2. Record your OBSERVATIONS (data) in a table, explain the results and write a conclusion for EACH INDICATOR based on the observation below the table. Include the approximate actual hydrogen ion concentration.

pH Lab

Red litmus paper turns blue in basic solutions

Blue litmus paper turns red in acidic solutions

Use the color scale on the hydrion paper packaging.

pH Lab

3. Use all available liquid indicators to determine the approximate pH of water as well as HCl and NaOH solutions. 4. Record your OBSERVATIONS (data) in a table, explain the results and write a conclusion for EACH INDICATOR based on your observation below the table. Include the approximate actual hydrogen ion concentration.

pH Lab

Liquid indicator chart:

pH Lab

5. Using any of the techniques you have learned to determine the pH, to the best of your ability, of vinegar, aspirin water, and the household cleaning product.

Organize your results in a table, explain the results and write a conclusion. Include the approximate actual proton concentration.

pH Lab

6. Using the available indicators, EXCLUDING the hydrion paper, determine the pH of the unknown solution.

Organize your results in a table, explain the results and write a conclusion. Include the actual proton concentration.

pH Lab

pH Lab

7. Confirm your results with additional observation(s), record the observations and write a brief conclusion.

- Attach your observations, discussions and conclusions to the pH indicator lab in your lab manual. Do the questions in the lab. You do not need to fill in any of the tables, etc…