The molar mass of Allura red is 496 g/mol. The stock solution contains 93.84 mg/L Allura red. ac. To create 100.00 mL of a 1.89 x 10-6 M solution, you would need this many mL of the stock solution.

The required stock solution for the preparation of dilute solution is 1.0 ml.

Explanation:

First, we will calculate the molarity of given solution as follows.

         Molarity =

                       =

                       =

                       =

Also, we know that

                = 1.0 ml

Thus, we can conclude that the required stock solution for the preparation of dilute solution is 1.0 ml.

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