Which of the following pair of compounds demonstrates the law of multiple proportions?
Which of the following pair of compounds demonstrates the law of multiple proportions?
$\mathrm{CH}_4, \mathrm{CCl}_4$
$\mathrm{BF}_3, \mathrm{NH}_3$
$\mathrm{CO}, \mathrm{CO}_2$
$\mathrm{NO}_2, \mathrm{CO}_2$
Solution
$\mathrm{CO}, \mathrm{CO}_2$,as these two compounds consist of the same two elements, carbon and oxygen, which combine in different simple numerical ratios, fulfilling the criteria of the law of multiple proportions.