1) 5.0 mL of 6.0 x 10^-4 potassium
5.0 mL of the solution prepared above are then mixed with
To determine the final concentration of potassium in the solution after mixing, we need to use the concept of dilution. Dilution is the process of reducing the concentration of a solute in a solution by adding more solvent.
Here are the steps to calculate the final concentration:
1. Determine the initial concentration of potassium (K) in the 5.0 mL solution. The initial concentration is given as 6.0 x 10^-4.
2. Calculate the volume of the final solution after mixing. Since we are adding more solvent, the final volume will be greater than 5.0 mL.
3. Determine the total volume of the final solution. This includes the initial 5.0 mL solution and the volume of the solvent added.
4. Determine the final concentration of potassium in the solution by dividing the amount of potassium in the initial solution by the total volume of the final solution.
Let's walk through an example calculation:
1. Initial concentration of potassium (K) = 6.0 x 10^-4
2. Assume we added 10.0 mL of solvent to the 5.0 mL solution.
3. Total volume of the final solution = Initial volume + Volume of solvent added = 5.0 mL + 10.0 mL = 15.0 mL.
4. Final concentration of potassium (K) = Initial concentration x (Initial volume / Total volume)
= (6.0 x 10^-4) x (5.0 mL / 15.0 mL)
= (6.0 x 10^-4) x (1/3) (simplifying the fraction)
= 2.0 x 10^-4
Therefore, the final concentration of potassium in the solution after mixing is 2.0 x 10^-4.