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In the chemical formula $\mathrm{H_2SO_4}$, what does the formula directly indicate about one molecule of sulphuric acid?
AIt contains 2 hydrogen atoms, 1 sulphur atom, and 4 oxygen atoms
BIt contains 1 hydrogen atom, 2 sulphur atoms, and 4 oxygen atoms
CIt contains 2 hydrogen atoms, 4 sulphur atoms, and 1 oxygen atom
DIt contains 4 hydrogen atoms, 2 sulphur atoms, and 1 oxygen atom
Answer & Solution
Correct answer: A. It contains 2 hydrogen atoms, 1 sulphur atom, and 4 oxygen atoms
The subscripts in $\mathrm{H_2SO_4}$ show the number of atoms of each element in one molecule: 2 H, 1 S, and 4 O. Where no subscript is written, the number is taken as 1.
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