Suppose you start with a solution of red dye #40 that is 4.0 ✕ 10−5 M....

Suppose you start with a solution of red dye #40 that is 4.0 ✕ 10−5 M. If you do three successive volumetric dilutions pipetting 5.00 mL of solution and diluting with water in a 40.00 mL volumetric flask, what is the molarity of the final dilution?

Expert Solution

Here, we will use the formula, where,

The initial volume of the dye, Initial strength of the solution in Molarity, Volume of the solution after dilution, Strength of solution after dilution.

So here, in each of the steps of dilutions, we start with 5 ml of the solution, i.e. 5 mL, and make it up to . We start with the initial concentration provided, and we will be calculating the final concentrations, in each of the three-step of dilutions as below-

Hence, the molarity of the final solution would be .

queen_honey_blossom answered 2 years ago

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