Question

Show how by calculation how you will prepare 1.0x10-2 M NaOH from 0.1 M NaoHstock solution

Answer 1

To prepare 1.0x10^-2M NaOH from 0.1M NaOH stock solution, you have to take a volume of the stock solution and dilute it using 9 times that volume of water. We conclude it from the equation for dilutions:

`\begin{gathered} V1C1=V2C2 \\ 0.1V1=0.01V2 \\ (0.1)/(0.01)V1=V2 \\ 10V1=V2 \\ V1=(1)/(10)V2 \end{gathered}`

It means that to prepare the 1.0x10^-2 solution, dilute 1 mL (for instance) of stock solution in 9mL of water.