Concentration
- How much a substance is dissolved in 1 dm3 of the solution
Strength
- How easily an acid/alkali dissociates when dissolved in water.
Universal Indicator
- Determines the pH value of a solution
- pH of a solution is derived based on number of hydrogen ions/hydroxide ions in a solution.
- Acids with smaller pH value have higher concentration of hydrogen ions
- Alkaline solutions with larger pH value have higher concentration of hydroxide ions.
pH of soil is important because the growth and development of plants is affected by this. Most plants grow the best when the soil is neutral or slightly acidic (pH 6 or 7).
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