Question

If there are 21.5 grams of citric acid in 0.500 liters of lemon juice, what is the molarity of citric acid (H3C6H5O7) in lemon juice? (rounded to 3 sig figs) (Don’t forget to convert the grams of citric acid into moles.)

Answer 1

The molarity of citric acid in lemon juice is 0.222 mol/L.

What is Molarity ?

Molarity (M) is defined as the number of moles of solute dissolved in 1L of solution. Molarity is also known as Molar concentration. The S.I unit of Molarity is molar (M) or mol/L.

How to find the Molarity ?

Molarity = $\frac{\text{Number of moles}}{\text{Liters of solution}}$

Number of moles = $\frac{\text{Given mass}}{\text{Molar mass}}$

                             = $\frac{21.5\ g}{192\ \text{g/mol}}$

                             = 0.111 mol

Now put the values in above formula we get

Molarity = $\frac{\text{Number of moles}}{\text{Liters of solution}}$

              = $\frac{0.111\ mol}{0.5\ L}$

              = 0.222 mol/L

Thus from the above conclusion we can say that The molarity of citric acid in lemon juice is 0.222 mol/L.

Learn more about the Molarity here: brainly.com/question/26873446

#SPJ1