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1m naoh 100ml

Preparing a 1M NaOH Solution in 100 mL Volume

Sodium hydroxide (NaOH), commonly known as lye or caustic soda, is a strong base widely used in chemical laboratories, industry, and various applications ranging from soap making to pH adjustment in water treatment. One important preparation in a laboratory is creating a sodium hydroxide solution with a specific molarity. This article outlines the steps involved in preparing a 1M NaOH solution in a 100 mL volume.

Understanding Molarity

Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution. In this case, a 1M solution of NaOH means one mole of sodium hydroxide is dissolved in one liter of solutions. Given that we want to prepare a 100 mL solution, we need to calculate the amount of NaOH required.

Calculating Required Amount of NaOH

The molar mass of NaOH is approximately 40 g/mol. Therefore, to prepare a 1M solution in 100 mL (0.1 L), the following calculation can be made

\[ \text{Moles of NaOH} = \text{Molarity} \times \text{Volume} = 1\, \text{mol/L} \times 0.1\, \text{L} = 0.1 \, \text{mol} \]

Next, converting moles to grams

Preparing a 1M NaOH Solution in 100 mL Volume

Thus, we need to weigh out 4 grams of solid sodium hydroxide.

1m naoh 100ml

Materials and Equipment Needed

To prepare the solution, you will need - A balance to measure the sodium hydroxide accurately - A 100 mL volumetric flask or a clean graduated cylinder - Distilled water - A stirring rod or magnetic stirrer - Safety equipment including gloves and goggles

Preparation Steps

1. Safety First Before you start, put on gloves and goggles. NaOH is corrosive and can cause burns.

2. Weigh the NaOH Using the balance, measure out exactly 4 grams of solid NaOH.

3. Dissolve in Water Add a small amount of distilled water (about 50 mL) into the volumetric flask. Gradually add the NaOH to the water while stirring continuously to ensure it dissolves completely. Sodium hydroxide is exothermic when dissolved, so be cautious of the heat generated.

4. Dilute to Volume Once the NaOH is fully dissolved, add distilled water to the flask until the total volume reaches 100 mL. Ensure the solution is mixed well.

5. Label the Solution Properly label the flask with the concentration of the solution and the date of preparation. This is important for safety and tracking purposes.

Conclusion

Preparing a 1M NaOH solution in 100 mL is a straightforward process that can be accomplished with careful measurement and attention to safety protocols. This solution can be utilized for various experiments and applications within the chemistry laboratory. Always remember to handle sodium hydroxide with care to avoid injuries, as it is a hazardous material.

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