What is the percent by mass of hydrogen in sulfuric acid?

Question

Quizplus · Accepted Answer

To calculate the percent by mass of hydrogen in sulfuric acid, we need to determine the molar mass of hydrogen and sulfuric acid.
- Molar mass of H = 1 g/mol
- Molar mass of H2SO4 = 2(1.01 g/mol) + 32.06 g/mol + 4(16.00 g/mol) = 98.08 g/mol
Then, we need to find the mass of hydrogen in 1 mole of sulfuric acid:
- Mass of hydrogen in 1 mole of H2SO4 = 2(1.01 g/mol) = 2.02 g/mol
Finally, we can calculate the percent by mass of hydrogen in sulfuric acid:
- Percent by mass of hydrogen = (mass of hydrogen/mass of H2SO4) x 100% = (2.02 g/mol/98.08 g/mol) x 100% = 2.06%
Therefore, the answer is choice C.

What Is the Percent by Mass of Hydrogen in Sulfuric