I am 100 mL of a 0.5 M HCl solution,and i want to dilute it to exactly 0.1 M. How much water should i add?

Answer 1

You want five times as many total liters, with the added water. That requires 400 ml of added water.

Answer 2

500ml

Answer 3

Apologies for the incorrect response in my previous message. To dilute the 100 mL of 0.5 M HCl solution to 0.1 M, you need to add 400 mL of water. This will result in a total volume of 500 mL.