Question

Find the ratio by mass of the combining elements in hydrogen chloride.

• A. $HCl$ : 71 : 2
• B. $HCl$ : 2 : 71
• C. $HC{l}_2$: 2 : 71
• D. $HC{l}_2$ : 2 : 35

Answer 1

Answer: (B)

$HCl$ : 2 : 71

In Hydrogen chloride, atomic mass of $H$ is $1$ and that of $Cl$ is $35.5$ . Hence, the ratio of masses of $H$ and $C$l is
$H:Cl$
$1:35.5$
$2:71$