Gases
Potassium chlorate, KClO3, decomposes when heated:
KClO3 (s) ® KCl (s) + 3/2 O2 (g)
1.00 gram of potassium chlorate is completely decomposed and the oxygen is
collected over water at 25°C and 0.99 atm. Calculate the total volume of gas
collected. (The vapor pressure of water at 25°C is 23.8 torr).
By OTA: Stephen Allen, MSc
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