Answered: You have an unusual order for…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

You have an unusual order for intravitreal ceftazidime 2.25mg/0.1 ml. Your pharmacy has ceftazidine already in solution at 100mg/ml. Using 1 ml of that ceftazidine, how many milliliters of sodium chloride 0.9% would you have to add to prepare the proper concertation?

Expert Solution

Step 1

Dilution equation is:

$c_{1} v_{1} = c_{2} v_{2}$ . . . (1)

Here, c₁ is the initial concentration = 100 mg/mL.

c₂ is the final concentration = 2.25 mg/0.1 mL.

= 22.5 mg/mL

v₁ is the initial volume which we are diluting = 1 mL

v₂ is the final volume that we have to find.

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