Question #df03f

1 Answer
Jul 19, 2017

Answer:

#"Si"_ ((s)) + 2"H"_ 2"O"_ ((g)) -> "SiO"_ (2(s)) + 2"H"_ (2(g)) uarr#

Explanation:

Red hot silicon will react with steam to produce silicon oxide and hydrogen gas.

The balanced chemical equation that describes this reaction looks like this

#"Si"_ ((s)) + 2"H"_ 2"O"_ ((g)) -> "SiO"_ (2(s)) + 2"H"_ (2(g)) uarr#

Notice that this is actually a redox reaction in which silicon is being oxidized to silicon oxide and water is being reduced to hydrogen gas.

#stackrel(color(blue)(0))("Si") _ ((s)) + 2 stackrel(color(blue)(+1))("H") _ 2"O"_ ((g)) -> stackrel(color(blue)(-2))("Si") "O"_ (2(s)) + stackrel(color(blue)(0))("H")_ (2(g))#

As it turns out, it would be possible to have a reaction between silicon and water at temperatures as low as room temperature #-># see this reference for more info on that.