Question

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

Answer 1

Answer: 2.06%

Step-by-step explanation:

The chemical formula for sulfuric acid is H₂SO₄.

Find the molar mass of the whole compound:

• Hydrogen(H) ≈ 1.01
• Sulfur(S) ≈ 32.07
• Oxygen(O) ≈ 16

2(1.01) + 32.07 + 4(16) = 98.02 g/mol

The percent composition by mass of hydrogen can be calculated as:

`(2.02)/(98.02)*100=0.0206*100=2.06`