Can you make up 20 ml of a 1200 dilution from 2 ml of a 140

Can you make up 20 ml of a 1:200 dilution from 2 ml of a 1:40 stock solution?

If so, how? If not why not?

If not what is the largest volume of a 1:200 you could make?

Solution

Answer:

No, we can’t prepare 20 mL

what is the largest volume of a 1:200 you could make?

We can make total of 10 mL of 1:200

2 mL of 1/40 solution + 8 mL of Diluent = 1/5 dilution

Total dilution factor: 1/40 x 1/5 = 1/200

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