# How to Prepare 0.02N Sodium Carbonate solution

To prepare a 0.02N (normal) solution of sodium carbonate (Na2CO3), you'll need to follow these steps carefully. A normal solution contains one equivalent of solute per liter of solution. Sodium carbonate has a molar mass of 106 g/mol, and its equivalent weight is half of that, which is 53 g/eq.

Here's how to prepare 0.02N sodium carbonate solution:

Ingredients and Equipment:

• Sodium carbonate (Na2CO3) powder
• Distilled water
• Balance or scale
• Stirring rod
• Container or flask for the final solution

Procedure:

Calculate the amount of sodium carbonate required:

• To prepare a 0.02N solution, you need 0.02 equivalents of sodium carbonate per liter of solution.
• Calculate the equivalent weight of sodium carbonate: 106 g/mol / 2 = 53 g/eq.
• Calculate the weight of sodium carbonate needed for 1 liter of 0.02N solution:
• Weight (g) = (0.02 eq/L) x (53 g/eq) = 1.06 g/L

Weigh out the calculated amount of sodium carbonate:

• Using a balance or scale, accurately measure 1.06 grams of sodium carbonate powder.

Prepare a solution:

• Place the weighed sodium carbonate into a clean and dry container or flask.

• Gradually add distilled water to the container or flask containing the sodium carbonate while stirring with a glass rod until the sodium carbonate completely dissolves. Make sure to dissolve it completely to achieve the desired concentration.

• If you have a volumetric flask of appropriate size (1 liter for 1 liter of solution), transfer the solution to it. Fill the flask up to the mark with distilled water. Ensure that the bottom of the meniscus is precisely at the mark.

Mix the solution:

• Gently invert the volumetric flask several times to ensure thorough mixing of the sodium carbonate solution.

Label the container:

• Clearly label the container or flask with the concentration, date of preparation, and any other relevant information.

Now, you have successfully prepared a 0.02N sodium carbonate solution. Remember to handle chemicals with care, use appropriate safety equipment (e.g., gloves, goggles), and work in a well-ventilated area when preparing chemical solutions.