0.1 N Naoh (sodium hydroxide) preparation

To prepare 0.1 N NaOH solution, you can follow these steps:

Determine the molar mass of NaOH, which is 40 g/mol (sodium: 23 g/mol, oxygen: 16 g/mol, hydrogen: 1 g/mol).


Calculate the amount of NaOH needed to make 1 liter of 0.1 N solution using the formula:

amount of NaOH (in grams) = molarity x volume (in liters) x molar mass

Here, molarity = 0.1 N, volume = 1 liter, and molar mass = 40 g/mol. Therefore,

amount of NaOH = 0.1 x 1 x 40 = 4 grams


1. Weigh out 4 grams of NaOH using a balance.


2. Add distilled water to a clean, dry 1-liter volumetric flask until it is about half full.


3. Slowly add the 4 grams of NaOH to the flask while stirring until it dissolves completely.


4. Fill the flask with distilled water to the 1-liter mark.


5. Cap the flask and shake well to ensure the solution is homogeneous.

Your 0.1 N NaOH solution is now ready to use. Note that NaOH is a highly caustic substance, so be sure to take appropriate safety precautions when handling it, such as wearing gloves and eye protection, and working in a well-ventilated area