1. Ignoring any side reactions and assuming the reaction occurs completely, how

Question

1. Ignoring any side reactions and assuming the reaction occurs completely, how large (in kg) an oxygen candle (KClO3) would be needed to supply 8 people with enough oxygen for 24 hours on a small submarine? Although this depends on the size of the person and their respiration rate (activity), according to NASA, an average person needs about 0.84 kg of O2 per day.

2. At 1 atmosphere and 25 o C, what would the volume of O2 be from the previous question?    

3. Assuming that air is 21% O2 by volume, what volume of air would be needed to answer question 2?

4. Assuming all of the analogous reactions occur, why would lithium chlorate be a more practical choice for the “chlorate candle” than either sodium or potassium chlorate?

I just need answers to question number 3 and 4.

Explanation / Answer

ANSWER 4

1)In practice, LiClO3 is more deliquescent than other chlorates.

2)It means that unless you have an absolutely dry air, solid LiClO3 will absorb moisture from air and turn into a liquid which does not support ignition.

3)Stay with good old KClO3 which is cheaper and more reliable.

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