How do I prepare for an 8N sodium hydroxide solution?
8N and 8M for NaOH are the same.
How much do you want to prepare. Let's assume you want a liter of NaOH solution. Weigh 40 grams NaOH, place in a 1,000 mL volumetric flask, add some water, swirl until all of the NaOH is dissolved (it will get hot), cool somewhat, add water to the mark, stopper, mix thoroughly, label.
To prepare an 8N sodium hydroxide (NaOH) solution, you need to determine the required amount of NaOH and the volume of water needed to make the desired concentration. Here's how you can do it:
1. Calculate the molecular weight of NaOH:
- Sodium (Na) = 22.99 g/mol
- Oxygen (O) = 16.00 g/mol
- Hydrogen (H) = 1.01 g/mol
- Molecular weight (NaOH) = 22.99 + 16.00 + 1.01 = 39.00 g/mol
2. Determine the molar concentration of the desired solution:
- 8N means the solution contains 8 moles of NaOH per liter (L).
3. Calculate the required mass of NaOH:
- Mass of NaOH = molar concentration (N) × molecular weight (NaOH) × volume of solution (L)
- Mass of NaOH = 8 mol/L × 39.00 g/mol × 1 L = 312 g
4. Weigh out 312 grams of sodium hydroxide (NaOH) using a balance.
5. Add the weighed NaOH to a container or beaker.
6. Add distilled or deionized water to the container while stirring until the volume reaches 1 liter.
7. Keep stirring until the NaOH dissolves completely in the water.
8. Once fully dissolved, you have successfully prepared an 8N sodium hydroxide solution.
Remember to handle sodium hydroxide with care as it is a strong base and can cause burns and irritation. Wear appropriate personal protective equipment such as gloves and goggles.