Q. 9.74 - An Introduction to General, Organic, and Biological Chemistry

Question

Michelle's doctor orders $5.0 mg$ of Compazine, which is used to treat vertigo. If the stock solution is $2.5\% (m/v)$, how many milliliters are administered?

Step-by-Step Solution

Answer

The quantity of compazine known concentration required is 0.2 mL.

Step 1: Introduction.

Adults frequently suffer vertigo and disorientation during visits to their doctors.

Step 2: Given data.

Using the following expression, determine the mass by volume percent.

$Mass percent (m/v)=\frac{solute mass}{solution volume}\times 100\%$

The problem,

Michelle's doctor prescribed a large amount of compazine to treat her vertigo.

$=5.0 mg\times \frac{1 g}{1000 mg}$

$=0.005 g$

The stock solution's mass/volume is $2.5\% (m/v)$.

Step 3: Explanation.

So,

$Solution volume=\frac{solute mass}{Mass percent (m/v)}\times 100\%$

$=\frac{=0.005 g}{2.5\%}\times 100\%$

$=0.2 mL$

The amount of compazine standard solutions required is $0.2 mL.$