Question

2.0 L HC2H3O2 (acetic acid) is made by diluting 75. mL of 17.6M acetic acid. What is the molarity of the new solution ?

Answer 1

Answer:

• 0.66M

Explanation:

The dilution equation is:

• C₁V₁ = C₂V₂

Where C₁ and C₂ are concentrations and V₁ and V₂ are volumes of the concentrated and diluted solutions.

First, convert the 75. mL volume into liters:

• 75. mL × 1 liter / 1,000 mL = 0.075 liter

Now, substitute the data into the dilution formula:

• 2.0 liter × C₁ = 0.075 liter × 17.6M

• C₁ = 0.075 liter × 17.6M / 2.0 liter = 0.66M ← answer