Mole ConceptMedium
Question
Samples of 1.0 g of Al are treated separately with an excess of sulphuric acid and an excess of sodium hydroxide. The ratio of the number of moles of the hydrogen gas evolved is
Options
A.1: 1
B.3: 2
C.2: 1
D.9: 4
Solution
2Al + 3H2SO4 → Al2(SO4)3 + 3H2
2Al + 2NaOH + 2H2O → 2NaAlO2 + 3H2
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