1) which of the oxide would be expected to be thermallyunstable and deompose acc

Question

1) which of the oxide would be expected to be thermallyunstable and deompose according to the equation 2MO >2M+O2 2) Sodium is slightly less reactive than calcium.predict the out come of the following reaction        a)Na+H2O> b) Na+O2> c)Na+HCl> c)Na+Ca2+> 3 )which is more reactive Fe2+ or Fe3+ and why 1) which of the oxide would be expected to be thermallyunstable and deompose according to the equation 2MO >2M+O2 2) Sodium is slightly less reactive than calcium.predict the out come of the following reaction        a)Na+H2O> b) Na+O2> c)Na+HCl> c)Na+Ca2+> 3 )which is more reactive Fe2+ or Fe3+ and why

Explanation / Answer

1) I will say most active oxides are very stable. Therefore,inactive oxides will behave like this. For example, Mercury oxidedecomposes at 500C 2HgO --> 2Hg +O2 2) 2Na + 2H2O --> 2NaOH +H2        4Na + O2-->2Na2O     or 2Na(s) + O2 +heat-->Na2O2( excess O2)     or Na + O2+heat-->NaO2     2Na + 2HCl --> 2NaCl + H2       Na + Ca2+ --> no 3) Fe3+ because it is more active in several conditions thanFe2+ For example, Fe will oxidize Fe3+ to Fe2+. While it can't do withFe2+          Fe +2FeCl3 --> 3FeCl2

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