Experiment No. ____ Date______
Aim: To determine the pH of the given soil samples
Principle: pH is the negative logarithm of the concentration of hydrogen ions in a solution. It can be determined using pH indicators.
Materials Required: Soil samples, weighing balance, test tubes, watch glass, distilled water, pH paper, pH chart
Procedure:
1. Weigh 1 gm of the soil sample and put it in a test tube.
2. Add 5 ml of distilled water in the test tube and shake the mixture.
3. Allow it to settle for 5 minutes.
4. Pour a few drops of the water from the upper layer into a clean watch glass.
5. Dip a pH paper into this sample in the watch glass; and match the colour with the pH chart.
6. Note the reading.
Observation Table:
|
Sr no. |
Soil Sample |
pH |
|
1 |
Garden soil |
|
|
2 |
Road side soil |
|
|
3 |
Pond side soil |
|
Result: pH of different soil types is different.
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