find the mass of sodium bicarbonate needed to make 418 mL of 0.100 M solution

Question

Question

Answer 1

Answer #1

Formula of Sodium bicarbonate is NaHCO₃.

Molar mass of sodium bicarbonate is 84 g.

Molarity of solution is the number of moles of solute per 1000 ml of solution.

So, moles of sodium bicarbonate in 418 ml of solution having molarity 0.100 M will be

(0.100 x 418 ÷ 1000) = 0.0418 moles

Mass of 0.0418 moles of sodium bicarbonate is equal to ( 84 x 0.0418) = 3.5112 g.

Answer 2

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