Question

a stock solution of kmno4 is provided to students. its concentration is 1.42 x 10-3 m. 3.00 ml of stock solution is diluted into a total of 100.00 ml of working solution. what is the concentration of the working solution, in units of molarity? this is a dilution process, so the simplest method is to use c1v1

Answer 1

The concentration of the working solution, in units of molarity is 4.6 M

What is the concentration of the working solution, in units of molarity?

When you dilute a solution, you effectively change the overall volume of the solution while maintaining the same number of moles of solute.

Let's assume right now that you are unaware of the dilution calculation equation.

To calculate how many moles of kmno4  to start with in this situation, utilize the molarity and volume of the concentrated solution.

c = n/ V ⇒ n = c ⋅ V

n  kmno4  = 3.00 M . 100 .00 . 1.42 x 10-3 L = 4.26 moles of kmno4

The total volume of the solution is then increased by the addition of water, bringing it up to 100 mL.

The amount of kmno4 remains constant, hence the diluted solution will have the same molarity as before.

c =  4.26 moles / 100 x 10 ^- 3 L =  4.6 M

The concentration of the working solution, in units of molarity is 4.6 M.

To learn more about molarity refer to:

https://brainly.com/question/26873446

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