How many mL of 0.1 M HCL need to prepare 1.0 L of an aqueous solution at pH of 2 by dilution with water ?

Question

How many mL of 0.1 M HCL need to prepare 1.0 L of an aqueous solution at pH of 2 by dilution with water ?

Answer 1

don.t spit in it!

Answer 2

pH=-log[H+]=2 so [H+]=10^-2 = 0.01 moles / liter

for 1 liter of 0.01 M HCl need 0.01 moles HCl

0.01 moles HCl = X liters * 0.1 moles / liter

# ml = 1000 * X liters

Fill and solve. 1:10 dilution