Question

You have 100 mL of a 12M solution of HCl, and you need to dilute it to 1.5M for an experiment. How many liters will your new solution be?

Answer 1

800.0 mL.

Step-by-step explanation:

• To solve this problem; we must mention the rule states the no. of millimoles of a substance before and after dilution is the same.

(MV)before dilution of HCl = (MV)after dilution of HCl

M before dilution = 12.0 M, V before dilution = 100.0 mL.

M after dilution = 1.5 M, V after dilution = ??? mL.

∵ (MV)before dilution of HCl = (MV)after dilution of HCl

∴ (12.0 M)(100.0 mL) = (1.5 M)(V after dilution of HCl)

∴ V after dilution of HCl = (12.0 M)(100.0 mL)/(1`.5 M) = 800.0 mL.