Equipment: 50 mL and 200 mL beakers, dilute HCl (hydrochloric acid), dilute NaOH (sodium hydroxide), 25 mL measuring cylinder, a glass stirring rod, spotting tile, Universal indicator solution, tripod, gauze mat, Bunsen burner, evaporating basin.
Method:
1. Using the measuring cylinder measure 10 mL of HCl and pour into your 50 mL beaker.
add dilute NaOH a few drops at a time while stirring the glass rod.
2. Every 10-15 drops stop adding the NaOH and use the glass stirring to transfer a drop of the solution to a spotting tile. Test it pH using Universal indicator.
2. As you get closer to neutral you may need to test the solution after every drop.
3. Kepp adding NaOH and testing the solution by repeating step
4. Pour the neutral solution into an evaporating basin and evaporate the water out of the solution using the equipment set up shown above.
| You can see that most of our solution was very acidic or very basic. We added 2 drops of hydrochloric acid to our very basic solution. |
| We waited for a minute if it's going to change or not. |
| Here is the top angle of our spotting tile with our trial and error solutions |
| Here you can see that the water from the beaker evaporated from the beaker to the bottom part of the evaporating basin. |
Observation:
It's really hard to get the neutral stage with the solution. At the end, some little crystal salt formed.
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