A 10 volume solution of H2O2 means_______?
Correct answer: D. 1mL of solution of H2O2 liberates 10 mL of O2 at STP
- A. 10 grams of H2O2 solution liberate 10 mL of O2 at STO
- B. 10 gram equivalents of H2O2 liberates 10 mL of O2 at STP
- C. 10 litres of H2O2 liberates 19 mL of O2 at STP
- D. 1mL of solution of H2O2 liberates 10 mL of O2 at STP
Explanation
A 10-volume H2O2 solution liberates 10 mL of oxygen gas at STP from every 1 mL of the solution. Thus the defining ratio is 1 mL solution : 10 mL O2 at STP, which matches d. Students may choose a because it repeats the number 10 but incorrectly uses 10 g instead of 1 mL.
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