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pallavi pradeep bhardwaj Grade: 12
        A metal oxide is reduced by heating it in a stream of hydrogen.It is found that after compelete reduction 3.15g of the oxide have yielded 1.05g of the metal.We may conclude that
7 years ago

Answers : (1)

Ramesh V
70 Points
										

consider +1 and +2 oxidation states for metals


case 1 :


M2O + H2  -- > 2M  +H2O


2x+16                 2x


so, its , 2*3.15/(2x+16) = 1.05/x


 or x= 4 i.e., the compound may be Helium(but helium being inert gas doesn't for oxide)


case 2 :


MO + H2  -- > M  +H2O


x+16                 x


so, its , 3.15/(x+16) = 1.05/x


 or x = 8 (but there is no element with atomic weight of 8)


--


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Regards,

Ramesh

 

7 years ago
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