Question

How many moles of hydrogen atom are present in one mole of Aluminium hydroxide?

• A. One mole
• B. Two moles
• C. Three moles
• D. Four moles

Answer 1

The correct option is C Three moles

Since 1 mole of aluminium hydroxide contains 3 moles of hydroxide ions, which in turn contains 1 mole of hydrogen each, we can say that

$1moleAl(OH{)}_3$ $\to$ $3molesof(OH{)}^{-}$ $\to$ $3molesofH$