Question

100 ml of 0.1 m hcl is diluted to 200 ml. What is the new molarity.
Please answer in 5 min.. Very urgent

Answer 1

Explanation:

Given:

Volume = 100 ml = 100/1000 L = 0.1 L

Molarity = 0.1 M

Molarity = Mole / Volume

Mole = Molarity * Volume = 0.1 * 0.1 = 0.01 mol of HCl

1 L water is added,

now total volume = 0.1 + 1 = 1.1 L

Molarity = Mole / Volume = 0.01/1.1 =1/110 mol/L = 0.00909 mol/L