- Oxygen can be generated by the thermal decomposition of potassium chlorate, described by the following equation.
2 KClO3(s) = 2 KCl(s) + 3 O2(g)
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Mass KClO3 start:
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200.0 mg
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Mass KClO3 end:
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47.0 mg
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Temperature of gas:
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33.0 °C
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Temperature of liquid water:
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33.0 °C
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Volume of water displaced:
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48.25 mL
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Height of water column remaining:
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5.1 cm
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A student carried out this reaction in a eudiometer in hopes of measuring the Ideal Gas Law Constant, R. The gas collected in the eudiometer displaced water (just like in your experiment). She allowed the reaction to proceed for 10 minutes and collected the following data:
- Does she have enough data to determine R? Explain.
- If she has enough information, find R. If she does not have enough information, make a good estimate of any missing information and estimate R.