Question

The maximum number of atoms present in

• A. $22.4L$ of $S{O}_3$ at STP
• B. $33.6L$ of $C{O}_2$ at STP
• C. $44.8L$ of $H_2$ at STP
• D. All the above have same number of atoms

Answer 1

The correct option is B $33.6L$ of $C{O}_2$ at STP

(a) Number of moles of $S{O}_3=\frac{22.4}{22.4}=1mol$
Number of moles of atoms $=1\times 4=4mol$
Number of atoms $=4N_A$

(b) Number of moles of $C{O}_2=\frac{33.6}{22.4}=1.5mol$
Number of moles of atom $=1.5\times 3=4.5mol$
Number of atoms $=4.5N_A$

(c) Number of moles of $H_2=\frac{44.8}{22.4}=2mol$
Number of moles of atoms $=2\times 2=4mol$
Number of atom $=4N_A$