How to prepare 0.2% of Hcl 36% in a water tank its volum is 5000 litre?
You have 36% HCl (that is your stock). Your final volume will be 5000 Liters and your final concentration will be 0.2%.
Use the formula provided above:
V is volume of HCl from stock (original).
You will find
It means take 27.78 Liters of 36% HCl and add to the water tank (final volume is 5000 Liters).