1. Write balanced chemical equations for the following reactions. (a) The reacti

Question

1. Write balanced chemical equations for the following reactions. (a) The reaction of aluminum and iron(IIl) oxide to form iron and aluminum oxide (known as the thermite reaction). Thermite reaction (b) The reaction of carbon and water at high tempera- ture to form a mixture of gaseous CO and H2 (known as water gas and once used as a fuel),. (c) The reaction of liquid silicon tetrachloride and mag- nesium forming silicon and magnesium chloride. This is one step in the preparation of ultrapure silicon used in the semiconductor industry

Explanation / Answer

Ans 1 :

The chemical reactions can be written on the basis of processes described. The reaction is then balanced by looking at the number of atoms on each side of the reaction and equating them.

So the balanced chemical reactions for these are :

a) 2Al + Fe2O3 = 2Fe + Al2O3

b) C + H2O = CO + H2

c) SiCl4 + 2Mg = 2MgCl2 + Si

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