A dilute solution of boric acid, H3BO3, is often used as an eyewash. Calculate h

Question

A dilute solution of boric acid, H3BO3, is often used as an eyewash. Calculate how much H3BO3 is required to prepare 500.0 mL of a 0.50% (w/v) boric acid solution, and describe how you would go about preparing the solution. A dilute solution of boric acid, H3BO3, is often used as an eyewash. Calculate how much H3BO3 is required to prepare 500.0 mL of a 0.50% (w/v) boric acid solution, and describe how you would go about preparing the solution. A dilute solution of boric acid, H3BO3, is often used as an eyewash. Calculate how much H3BO3 is required to prepare 500.0 mL of a 0.50% (w/v) boric acid solution, and describe how you would go about preparing the solution. A dilute solution of boric acid, H3BO3, is often used as an eyewash. Calculate how much H3BO3 is required to prepare 500.0 mL of a 0.50% (w/v) boric acid solution, and describe how you would go about preparing the solution.

Explanation / Answer

% w/v = (mass of solute / volime of solution) x 100

0.50 = (mass of solute / 500)x 100

mass of solute / 500 = 0.005

mass of solute = 2.5 g

dissolve 2.5 in water and makeup the solution up to 500 mL with water.

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