CH-92
pH scale
Chemistry · Secondary 3 · Easy · pH scale
A farmer wants to grow a crop that prefers slightly acidic soil with an optimal pH range of 5.5 to 6.5. His soil has a pH of 8.0. Which substance should he add to adjust the soil to the correct pH range?
- Calcium oxide
- Ammonium sulfate fertiliser
- Aqueous sodium hydroxide
- Distilled water
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