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Standardization equation

0.1M (HCl)

X

.....

mL (Titre of 0.1 M HCL)

=

M (NaOH)

X

10 mL (0.1M NaOH)

				......		mL (Titre of 0.1 M HCL)		X	0.1M (HCl)
M (NaOH)		=		-----	-	---------------------------	---	------	------------
						10 mL(0.1M NaOH)

Example:

if it took 9.6 mL of 0.1 M HCL to titrate 10 mL of NaOH to a pink end point then the molarity of the approximately (") 0.1M NaOH is -

				9.6		mL (Titre of 0.1 M HCL)		X	0.1M (HCl)
M (NaOH)		=		-----	-	---------------------------	---	------	------------
						10 mL(0.1M NaOH)

=

0.96 M NaOH

Note -

• If the HCl solution is not exactly 0.1 M use the correct concentration in your calculations.
  
  
• You can pipette and titrate a different volume to the 10 mL NaOH recommended, if you substitute the 10ml in the equation, with the volume used.
  
  Larger volumes provide a lower percentage for error but use more HCl solution and may require 25 ml burette refills.