Given :
A solution contained 0.05g of sodium hydroxide in 25 cm3 of water.
To Find :
The concentration of the solution in g/dm³.
Solution :
We know, 1 cm = 0.1 dm
So, 1 cm³ = 0.001 dm³
Now, 25 cm³ = 25 × 0.001 dm³
25 cm³ = 0.025 dm³
Now, concentration of the solution in g/dm³ is [tex]\dfrac{0.05\ g}{0.025\ dm^3} = 2 \ g/dm^3[/tex].
Therefore, the concentration of the solution is 2 g/dm³.
