Dilution method formula

Many students always get confused when using the dilution method formula especially when susbstituting value for V1.

For the above situation, we shall substitute the value as follows.

M1V1 = M2V2
2V1 = 0.2(100)
V1= 10 cm3

From the calculation, we know that
  1. 10 cm3 of is pipetted from 2.0 mol dm-3 sodium hydroxide solutoin and transferred into a volumetric flask.
  2. 90 cm3 of distilled water is added into the volumetric flask. The volumetric flask is shaken well.
  3. 100 cm3 of 0.2 mol dm-3 sodium hydroxide solution is ready.

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