Question

The molecular mass of sulphuric acid is ___ g/mol.

• A. 98.075
• B. 190
• C. 72.075
• D. 79

Answer 1

The correct option is A

98.075

Relative atomic mass of H=1.01H=1.01

Relative atomic mass of S=32.07 S=32.07

Relative atomic mass of O=16.00 O=16.00

Therefore, molar mass of Sulphuric acid

= (2(1.01)+32.07+4(16.00)) = (2(1.01)+32.07+4(16.00)) g/mol

= (2.02+32.07+64.00) = (2.02+32.07+64.00) g/mol

= 98.09 g/mol