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