How many moles of H₂ can be made from complete reaction of 3.0 moles of Al? Given:
2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

Question

How many moles of H₂ can be made from complete reaction of 3.0 moles of Al? Given: 2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

Quizplus · Accepted Answer

According to the balanced chemical equation, 2 moles of Al reacts with 6 moles of HCl to produce 3 moles of H2 gas and 2 moles of AlCl3. Therefore, for every 2 moles of Al used, 3 moles of H2S are produced. So, for 3 moles of Al, the number of moles of H2S produced is given by: 3 moles Al × (3 moles H2S/2 moles Al) = 4.5 moles H2S Therefore, the answer is C, 4.5 moles of H₂.

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