how would you prepare 100cm cube of 01M SODIUM CARBONATE AND EXPLAIN THE PROCEDURE
calculate mass of Na3CO3
mass=molarity*molmassNa3CO3*volumeinLiters
take that and put it in a beaker
add water to the 100ml mark
stir until dissolved
label, and store safely.
Na3CO3 should be Na2CO3. Those pesky numbers move when we least expect it. :-)
To prepare a 100 cm³ 0.1M Sodium Carbonate solution, you will need the following materials and equipment:
Materials:
- Sodium Carbonate (Na2CO3) powder or solid
- Distilled water
Equipment:
- Electronic balance or weighing scale
- Beaker
- Stirring rod or glass rod
- Graduated cylinder or pipette
- Safety goggles
- Gloves
- Access to a lab or safe working environment
Procedure:
1. Calculate the amount of Sodium Carbonate needed:
- 0.1M Sodium Carbonate means 0.1 moles of Sodium Carbonate in 1 liter of solution.
- Since you need a 100 cm³ (or 0.1 liters) solution, you will need 0.01 moles of Sodium Carbonate.
- Now, you need to calculate the mass of Sodium Carbonate required using its molar mass. The molar mass of Na2CO3 is approximately 105.99 g/mol.
- Mass of Sodium Carbonate = Number of moles × Molar mass
- Mass of Sodium Carbonate = 0.01 mol × 105.99 g/mol
2. Weigh the required amount of Sodium Carbonate:
- Use an electronic balance or weighing scale to accurately measure the required mass of Sodium Carbonate, which is obtained from the previous calculation.
3. Dissolve Sodium Carbonate in water:
- Fill a clean beaker with distilled water, leaving some room for the Sodium Carbonate to dissolve.
- Slowly add the weighed Sodium Carbonate into the beaker containing distilled water, while stirring continuously with a glass rod or stirring rod.
- Continue stirring until all the Sodium Carbonate has dissolved completely.
4. Adjust the volume of the solution:
- Transfer the solution into a graduated cylinder or use a pipette to measure the final volume. Add distilled water as necessary to reach the desired 100 cm³ volume.
5. Mix and homogenize the solution:
- Stir the solution gently for a few minutes to ensure thorough mixing and homogeneity.
6. Safety precautions:
- Wear safety goggles and gloves throughout the process to protect your eyes and hands from any potential harm.
- Work in a well-ventilated area or under a fume hood to avoid inhaling any harmful fumes.
Remember, accuracy is vital while measuring the chemicals and volume. Double-check your calculations and follow proper lab safety protocols.