Silicon dioxide and solid carbon react to form solid silicon and carbon monoxide.What is oxidized?

Solutions

Expert Solution

Silicon dioxide formula is SiO2

carbon is represented by C

silicon is represented by Si

Carbon monoxide is represented by CO

SiO2 +C(s)Si(s) +CO

Now balancing the equation we get

SiO2 +2C(s)Si(s)+2CO

oxidation state of oxygen that is O= -2 and Si =+4 in SiO2,and carbon in solid carbon is 0 on reactant side

The oxidation state of silicon on product side in solid silcion is 0 and the oxidation state of oxygen O=-2 and that

of carbon is +2 in carbon monoxide on product side

From the reaction we see silicon dioxide loses oxygen to form Silicon and carbon on reactant side gain oxygen

and oxidation number on carbon has increases from 0 to +2 that is from reactant side that is solid carbon to product side that is carbon in CO

So we can say carbon is getting oxidised that is solid carbon C(s) is getting oxidised to CO

Answer is solid carbon is oxidized that is C(s)

queen_honey_blossom answered 9 months ago

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