Chlorous acid,HClO₂,contains what percent hydrogen by mass? A)1.92% B)25.0% C)23.4% D)1.47% E)5.18%

Question

Quizplus · Accepted Answer

The molecular formula for chlorous acid is HClO2. To find the percent composition of hydrogen by mass, first calculate the molar mass of HClO2: H (1.01 g/mol) + Cl (35.45 g/mol) + O2 (2 x 16.00 g/mol) = 68.46 g/mol. The mass of hydrogen in the compound is 1.01 g/mol. Therefore, the percent hydrogen by mass is (1.01 g/mol / 68.46 g/mol) x 100% = 1.47%.

Chlorous Acid,HClO2,contains What Percent Hydrogen by Mass

Chlorous Acid,HClO₂,contains What Percent Hydrogen by Mass