1M Sodium Carbonate (Na2CO3) Solution: pH and Preparation
Sodium carbonate, also known as washing soda, is a common inorganic compound with the chemical formula Na2CO3. It is widely used in various industries, including manufacturing, water treatment, and laboratory applications. In this article, we will discuss the preparation and pH of a 1M sodium carbonate solution.
Preparation of 1M Sodium Carbonate Solution
To prepare a 1M sodium carbonate solution, you will need:
- Sodium carbonate (Na2CO3): 106.0 g/mol
- Distilled water: 1 liter
Step-by-Step Instructions
- Weigh: Weigh out 106.0 grams of sodium carbonate (Na2CO3) using a balance.
- Transfer: Transfer the weighed sodium carbonate to a 1-liter beaker or flask.
- Add water: Gradually add 1 liter of distilled water to the beaker while stirring until the solid is completely dissolved.
- Stir: Stir the solution until it is homogeneous and clear.
pH of 1M Sodium Carbonate Solution
The pH of a 1M sodium carbonate solution is approximately 10.52 at 25°C. This is because sodium carbonate is a strong base that dissociates completely in water to produce hydroxide ions (OH-), which increase the pH of the solution.
pH Calculation
The pH of a 1M sodium carbonate solution can be calculated using the following formula:
pH = 14 + log[OH-]
where [OH-] is the concentration of hydroxide ions.
Importance of pH Control
pH control is crucial in various applications, including laboratory experiments, industrial processes, and environmental monitoring. A 1M sodium carbonate solution with a pH of 10.52 can be used as a pH buffer or a base in chemical reactions.
Conclusion
In this article, we have discussed the preparation and pH of a 1M sodium carbonate solution. The solution is prepared by dissolving 106.0 grams of sodium carbonate in 1 liter of distilled water, and its pH is approximately 10.52 at 25°C. Understanding the pH of this solution is important in various applications, including laboratory experiments and industrial processes.
