Question

Cedrick & Astrid titrated a 10.00 mL aliquot of grapefruit juice with a 0.171 M NaOH solution to the end point. They calculated that there was 0.1698 g of citric acid present in the juice sample. What is the amount mg of citric acid present per mL of juice?

Answer 1

Answer:

17 mg/ml.

Explanation:

Since NaOH was titrated against Citric acid in the grape fruit, therefore

Converting g to mg,

0.1698 g * 1000 mg/1 g

= 169.8 mg

Volume of grapefruit juice = 10 ml

Mass of Citric acid in ml of juice = 169.8/10

= 17 mg/ml.