a 0.1M NaOH solution has been prepared for you.Describe how you would prepare 1 litre of the same solution
Add 0.1 mole of NaOH (4.0 g) to 1 liter of water.
DrWLS didn't REALLY mean that. Those instructions will prepare a 1 molal solution. To be more specific about it, you want to add 0.1 mole NaOH (4.000 grams NaOH) to a 1 L volumetric flask, add some water, swirl to dissolve (it will get hot), let it cool, then add water to the mark of the volumetric flask. Note that this is not the same as adding 0.1 mole NaOH to 1 L water. The former contains MORE than 1 L of SOLUTION. The latter contains 1 L of SOLUTION.
I stand corrected.
I WILL ADD 0.1mol NaOH TO A 1 LITRE VOLUMETRIC FLASK, ADD LITTLE Water to dissolve, and NaOH TO 1 l WATER
To prepare 1 liter of a 0.1M NaOH solution, you will need to follow a specific procedure. Here is how you can do it:
1. Determine the molar mass of NaOH: Na (Sodium) has a molar mass of 22.99 g/mol, O (Oxygen) has a molar mass of 16.00 g/mol, and H (Hydrogen) has a molar mass of 1.01 g/mol. So, the molar mass of NaOH is (22.99 g/mol) + (16.00 g/mol) + (1.01 g/mol) = 40.00 g/mol.
2. Calculate the amount of NaOH needed: The concentration of the desired solution is 0.1M, which means there is 0.1 mole of NaOH in 1 liter of solution. Multiply the molarity (0.1M) by the volume (1 liter) to get the number of moles: 0.1M x 1 L = 0.1 moles.
3. Convert moles of NaOH to grams: Multiply the number of moles of NaOH (0.1 moles) by the molar mass of NaOH (40.00 g/mol) to get the mass in grams: 0.1 moles x 40.00 g/mol = 4.00 grams of NaOH.
4. Weigh out the required amount of NaOH using a balance.
5. Dissolve NaOH in distilled water: Pour approximately 800 ml of distilled water into a clean container. Slowly add the weighed NaOH to the water while stirring gently. Adding water first helps to prevent splattering and ensures proper dissolution.
6. Transfer the NaOH solution to a 1-liter volumetric flask: After the NaOH is completely dissolved, pour the solution into a 1-liter volumetric flask. Use a funnel to avoid spillage, and rinse any remaining NaOH with distilled water into the flask.
7. Fill the volumetric flask with distilled water: Once the solution is in the volumetric flask, add distilled water until the bottom of the meniscus aligns with the mark on the neck of the flask. Avoid air bubbles in the solution by swirling the flask gently.
8. Cap and mix the solution: Securely cap the volumetric flask and mix the solution thoroughly by inverting it a few times. This allows for uniform distribution of NaOH throughout the solution.
Congratulations! You have successfully prepared 1 liter of a 0.1M NaOH solution. Please note that NaOH is highly caustic and should be handled with care, using appropriate safety precautions.