Question

1. how will you prepare a 5mm solution of silver nitrate in 100 ml using a stock solution of 0.1m silver nitrate. this solution is used to prepare nanoparticles.

Explanation:

Step1: Convert concentrations to same units

$5\ mM = 5\times10^{- 3}\ M$

Step2: Use the dilution formula $C_1V_1 = C_2V_2$

Let $C_1 = 0.1\ M$, $V_1$ be the volume of stock solution, $C_2=5\times10^{-3}\ M$ and $V_2 = 100\ mL$.

Step3: Solve for $V_1$

$V_1=\frac{C_2V_2}{C_1}=\frac{5\times10^{-3}\ M\times100\ mL}{0.1\ M}=5\ mL$

Answer:

Take 5 mL of the 0.1 M stock solution and dilute it to 100 mL with the appropriate solvent.