Chemistry
Acids and Bases

# What is the concentration of Na2SO4 solution prepared by dissolving 5.35 g of Na2SO4 in sufficient water to give 330 ml of solution?

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First.

Get moles sodium sulfate.

5.35 grams Na2SO4 (1 mole Na2SO4/142.05 grams)

= 0.0377 moles Na2SO4

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Second.

Molarity = moles of solute/Liters of solution ( 330 mL = 0.33 Liters )

Molarity = 0.0377 moles Na2SO4/0.33 Liters

= 0.114 M Na2SO4

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