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2NaOH + H2SO4 → 2H2O + Na2SO4

How many grams of sodium sulfate will be formed, if you start with 1.50 L of a 4.0 M solution of sodium hydroxide?
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Answer:

Sodium Sulfate's Atomic Mass is 142.1 grams/mol. Sodium Hydroxide's Atomic Mass is 40 grams/mol. The ratio of NaOH to Na2SO4 is 2:1 so we divide the resulting 5 moles of NaOh by 2. 2.5 moles x 142.1 grams/mol (NaSO4)=355.25 or 355.2 grams of Sodium sulfate are produced.

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