Question

How much sterile water for injection must be added to 1 gm of drug in order to make a 2.5

Answer 1

To make a 2.5 M solution, you need to add 25 mL of sterile water for injection to 1 g of drug.

Step-by-step explanation:

In order to calculate how much sterile water for injection must be added to 1 g of drug to make a 2.5 M solution, we need to determine the mass of sterile water using the formula:

mass of drug / molar mass of drug = volume of sterile water / molarity of solution

Using the given information, we have:

1 g / molar mass of drug = volume of sterile water / 2.5 M

We can then solve for the volume of sterile water required.

For example, if the molar mass of the drug is 100 g/mol, then:

1 g / 100 g/mol = volume of sterile water / 2.5 M

Solving for the volume of sterile water, we get:

volume of sterile water = (1 g / 100 g/mol) * 2.5 M

Therefore, the volume of sterile water required would be 0.025 L or 25 mL.