Clearly show the setups for your calculations. 1. You wish to prepare 50.0 mL of

Question

Clearly show the setups for your calculations.

1. You wish to prepare 50.0 mL of 2.30 x 1.0^-2 M solution of Restoril (temazepam) C16H13ClN2O2 . Describe how to prepare this solution from the pure drug and deionized water. Analytical balances and volumetric flasks are available to you (assume that your drug dissolves in water, at least to the extent necessary for this problem.) Use complete sentences in your description of the solution preparation process. show any required calculations you would need to make.

2. Calculate how many milligrams of Restoril (temazepam) C16H13ClN2O2 are contained in 2.0 mL of a 3.0% (wt/vol) solution of restoril.

Explanation / Answer

1.

no. of mole = molarity X volume of solution in liter

no. of mole of Restroil in 50 ml of 2.30 X 10-2 M solution = 2.30 X 10-2 X 0.050 = 0.00115 mole

molar mass of Restroil = 300.7 gm/mole

then 0.0015 mole of Restroil = 300.7 X 0.0015 = 0.451 gm

Take 0.451 gm of Restroil in volumetric flask and dilute it to 50 ml by deionized water we get 50 ml of 2.30 X 10-2 M solution of Restroil.

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