A sample of sodium peroxide, Na2O2, was reacted with an excess of water. 2Na2O2(s) + 2H2O(l )

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A sample of sodium peroxide, Na2O2, was reacted with an excess of water.
2Na2O2(s) + 2H2O(l ) → 4NaOH(aq) + O2(g)
All of the sodium peroxide reacted, and the oxygen was collected over water at 21oC. The barometric pressure was 771 mmHg. The apparatus was similar to that shown in Figure 5.20. However, the level of water inside the tube was 25.0 cm above the level of water outside the tube. If the volume of gas in the tube is 31.0 mL, how many grams of sodium peroxide were in the sample?
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General Chemistry

ISBN: 978-1439043998

9th edition

Authors: Darrell Ebbing, Steven D. Gammon

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