In chem lab we did an experiment where we generated oxygen from hydrogen peroxide using manganese dioxide as the catalyst. We collected the gas in 5 bottles. In my chem lab report, I have to answer this question: "What is different about the composition of the first bottle of gas collected compared to the other four?" I was under the impression that they were all the same, so if someone would kindly explain it would be greatly appreciated.
2007-02-07 04:43:38 · 3 answers · asked by Jess 2 in Science & Mathematics ➔ Chemistry
The first one would have contained mostly air from the apparatus. The oxygen had to push the air out, so that you could start collecting actual oxygen!
2007-02-07 04:47:01 · answer #1 · answered by Gervald F 7 · 1⤊ 0⤋
If you do not use water displacement to collect the oxygen, then the first bottle has air in it. If you used water displacemet, the hose has air in it.
2007-02-07 12:56:28 · answer #2 · answered by science teacher 7 · 0⤊ 0⤋
fe3o4 equation
2013-10-02 21:41:44 · answer #3 · answered by Anonymous · 0⤊ 0⤋