The correct option is(C): 67.2dm3.
\(\underset{1\,mol} {Fe _{2}O_{3}}+\underset{3 mol }{3 CO } \longrightarrow 2 Fe +3 CO _{2}\)
Volume of \(1\, mole\) carbon monoxide
\(= 22.4\, L\) (at STP)
\(1\) mole of ferric oxide is reduced by \(= 3\) moles of \(CO\)
\(=3 \times 22.4\, L\) of \(CO\)
\(=67.2 \,dm ^{3}\) of \(CO\)
Read More: Some Basic Concepts of Chemistry
There are two ways of classifying the matter:
Matter can exist in three physical states:
Based upon the composition, matter can be divided into two main types: