Sodium Hydroxide => Sodium Oxide+Water
2NaOH => Na 2 O + H 2 O
To test this we reaction , we had to heat sodium hydroxide by putting it over a candle. We had to see if water formed and if mass was lost.
First we took the starting mass, and it was 63.845g. After a bit, we did clearly see water form.
The resulting mass didn't change as much as we hoped, it only went down to 63.603g.
The Sodium Oxide looked like this, in the end:
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