weigh 60 g of solid NaOH and add to the 250 mL volumetric flask. add about 100 mL distilled water to the flask. swirl the flask to dissolve the NaOH . caution should be used, since the flask will become swirl .allow the flask to reach the room temperature. add distilled water to fill line. stopper the flask. invert the flask several times to create a uniform solution. allow the flask to reach the room temperature and add additional distilled water if needed (stopper and agitate the flask after each addition of solvent).
To prepare a sodium hydroxide (NaOH) solution, start by weighing precisely 60 grams of solid NaOH using an analytical balance.
Carefully transfer the measured NaOH into a [size, e.g., 250 mL] volumetric flask.
Next, add approximately [volume, e.g., 150 mL] of distilled water to the flask.
As you add water, be cautious, as the dissolution of NaOH is exothermic, causing the flask to heat up.
Swirl the flask gently to dissolve the NaOH completely, taking care to avoid splashes or spills.
Allow the solution to cool to room temperature, ensuring that the flask is not too hot to handle.
Once at room temperature, carefully add distilled water to fill the volumetric flask to the mark [indicate the mark, e.g., 250 mL]. Stopper the flask securely to prevent evaporation or contamination.
Invert the flask several times to ensure thorough mixing and create a uniform NaOH solution.
Allow the flask to return to room temperature before assessing the solution's concentration. If needed, add additional distilled water in small increments, stopping and agitating the flask after each addition.
This step ensures precise control over the final solution volume and concentration.
By following these steps diligently, you can create a reliable and accurately diluted sodium hydroxide solution in the volumetric flask.