What is the molar mass of sulfuric acid (H2SO4)?

Practice Questions

Q1
What is the molar mass of sulfuric acid (H2SO4)?
  1. 98 g/mol
  2. 96 g/mol
  3. 100 g/mol
  4. 92 g/mol

Questions & Step-by-Step Solutions

What is the molar mass of sulfuric acid (H2SO4)?
Correct Answer: 98 g/mol
  • Step 1: Identify the elements in sulfuric acid (H2SO4). They are hydrogen (H), sulfur (S), and oxygen (O).
  • Step 2: Count the number of each type of atom in the formula: There are 2 hydrogen atoms, 1 sulfur atom, and 4 oxygen atoms.
  • Step 3: Find the atomic mass of each element: Hydrogen (H) has an atomic mass of about 1 g/mol, sulfur (S) has an atomic mass of about 32 g/mol, and oxygen (O) has an atomic mass of about 16 g/mol.
  • Step 4: Calculate the total mass contributed by each element: For hydrogen, it's 2 * 1 = 2 g/mol; for sulfur, it's 1 * 32 = 32 g/mol; for oxygen, it's 4 * 16 = 64 g/mol.
  • Step 5: Add all the contributions together: 2 g/mol (from H) + 32 g/mol (from S) + 64 g/mol (from O) = 98 g/mol.
  • Step 6: The molar mass of sulfuric acid (H2SO4) is 98 g/mol.
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