Find out the molecular mass of sulphuric acid (H2SO4)[ Atomic mass : H = 1 S = 32 O = 16 N = 14
The Correct Answer and Explanation is:
To calculate the molecular mass of sulfuric acid (H₂SO₄), we need to add up the atomic masses of all the elements in the molecule. The chemical formula for sulfuric acid is H₂SO₄, meaning it contains:
- 2 atoms of hydrogen (H)
- 1 atom of sulfur (S)
- 4 atoms of oxygen (O)
Step-by-step Calculation:
- Hydrogen (H):
- The atomic mass of hydrogen is 1.
- There are 2 hydrogen atoms, so the total mass from hydrogen is: 2×1=22 \times 1 = 22×1=2
- Sulfur (S):
- The atomic mass of sulfur is 32.
- There is only 1 sulfur atom, so the total mass from sulfur is: 1×32=321 \times 32 = 321×32=32
- Oxygen (O):
- The atomic mass of oxygen is 16.
- There are 4 oxygen atoms, so the total mass from oxygen is: 4×16=644 \times 16 = 644×16=64
Total Molecular Mass:
Now, to find the total molecular mass of H₂SO₄, we add up the contributions from all the atoms:Total mass=(2 from H)+(32 from S)+(64 from O)=98 g/mol\text{Total mass} = (2 \, \text{from H}) + (32 \, \text{from S}) + (64 \, \text{from O}) = 98 \, \text{g/mol}Total mass=(2from H)+(32from S)+(64from O)=98g/mol
Conclusion:
The molecular mass of sulfuric acid (H₂SO₄) is 98 g/mol. This value is essential in many chemical reactions, especially in those involving acids and bases, as well as industrial processes where sulfuric acid is commonly used, such as in the production of fertilizers and the refining of petroleum.
