prepare a 50ml of potassium permanganate solution such that 10ml diluted to 250ml will produce a 1 in 2000 solution
To prepare a 50 ml solution of potassium permanganate, such that 10 ml diluted to 250 ml will yield a 1 in 2000 solution, we need to follow these steps:
Step 1: Determine the concentration of the 1 in 2000 solution.
A 1 in 2000 solution means that there is 1 part of the solute (potassium permanganate) for every 2000 parts of the solution (water). Thus, the concentration of the 1 in 2000 solution is 1/2000.
Step 2: Calculate the amount of potassium permanganate needed.
Since we know the concentration and the volume of the solution we want (50 ml), we can calculate the amount of potassium permanganate required.
Amount of potassium permanganate = concentration × volume
Amount of potassium permanganate = (1/2000) × 50 ml
Amount of potassium permanganate = 0.025 ml
Step 3: Dilute the solution.
To prepare a 50 ml solution, we need to add 0.025 ml of potassium permanganate to the solvent (water). We also know that 10 ml diluted to 250 ml will yield the desired concentration.
To dilute the potassium permanganate solution, follow these steps:
1. Measure 10 ml of the 0.025 ml potassium permanganate solution.
2. Add the 10 ml solution to a container.
3. Add enough water to the container to make the total volume 250 ml.
This solution is now ready, and 10 ml of this solution diluted further to 250 ml will yield a 1 in 2000 solution of potassium permanganate.