Strength of Solution

Question: What is meant by 'a 2.5% solution' (Fig 1)?

Fig 1 Thiopental as a 2.5% solution

Question: What is meant by 'a 2.5% solution' (Fig 1)?

Answer: 2.5% refers to the weight of drug as a percentage of the volume. If we started with 100 ml of solution, it should contain 2.5 g of drug.

Question: How many milligrams of thiopental are there in 1 ml of a 2.5% solution?

Fig 1 Thiopental as a 2.5% solution

Question: What is meant by 'a 2.5% solution' (Fig 1)?

Answer: 2.5% refers to the weight of drug as a percentage of the volume. If we started with 100 ml of solution, it should contain 2.5 g of drug.

Question: How many milligrams of thiopental are there in 1 ml of a 2.5% solution?

Answer: 25 mg.

If there is 2.5 g in 100 ml of solution,

100 ml of solution contains 2500 mg.

So 1 ml contains mg.

Fig 1 Thiopental as a 2.5% solution