Question
Asked Sep 26, 2019

Your supervisor gave you a 5% saline (NaCl) solution. You need to make 100ml of 1.0% saline solution. How much 5% saline would you take to complete the task?

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Expert Answer

Step 1

Given

5% saline

Required

100ml of 1.0% saline.

By using the formula

S1V1 = S2V2

Where, S1 = strength of given solution, V1 = unknown volume of given solution, S2 = Strength of required solution, and V2 = volume of required solution.

5 x V1 = 1 x 100

V1 = (1 x 100)/5

     = 20 ml.

...

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