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iwaldron's picture

Preparing NaOH solution

Submitted by iwaldron on Mon, 02/15/2010 - 12:19pm.

The safest way to prepare a clear solution with a basic pH of 10 or above is to use Calgon or Borax. 

To use NaOH pellets we think the best approach would be to prepare a 0.25 molar solution, dissolving the appropriate number of pellets in water and using gloves and goggles for safety. 

Either way, you will want to check to make sure that your solution when diluted to 1/8 strength will still change color when the pH indicator is added.

 

Ingrid Waldron and Jennifer Doherty


 

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