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Q92
(NDA-II/2016)
Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic chemical principles
Answer Verified
How many moles of hydrogen atom are present in one mole of Aluminium hydroxide ?
Result
Your answer:
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·
Correct:
C
Explanation
The chemical formula for Aluminium hydroxide is Al(OH)3. This formula indicates that one formula unit of the compound consists of one aluminium atom and three hydroxide (OH) groups. Within each hydroxide group, there is one oxygen atom and one hydrogen atom. Consequently, a single molecule or formula unit of Al(OH)3 contains exactly three hydrogen atoms. According to Avogadro's principle, the ratio of atoms in a single molecule is identical to the ratio of moles of atoms in one mole of the substance. Therefore, one mole of Aluminium hydroxide contains three moles of hydrogen atoms. This stoichiometric relationship is fundamental in calculating the elemental composition and molar mass of chemical compounds.
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