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Question

What is the molar mass of sulfuric acid H2SO4?


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Solution

Step 1: Molar mass:

  • The mass of 1 mole of a substance is called its molar mass.

Step 2: Formula for molar mass

  • Molar mass =The atomic mass of element × number of atoms given in subscript

Step 3: Calculation of Molar mass of sulfuric acid H2SO4:

Molar mass of H2SO4=Atomic mass of H+Atomic mass of S+Atomic mass of OMolar mass of H2SO4=2×1.0079 g mol-1+32.06 g mol-1+4×16.00 g mol-1Molar mass of H2SO4=2.0158 g mol-1+32.06 g mol-1+64 g mol-1=98.0758 g mol-1

Thus, the molar mass of sulfuric acid H2SO4is 98.0758 g mol-1.


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