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i am not able to solve question 3 and 4, for 3 according to me ans of q(3) is (b) but correct ans is (d),how?

i am not able to solve question 3 and 4,
for 3 according to me ans of q(3) is (b) but correct ans is (d),how?

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Grade:12th pass

1 Answers

Bhavya
askIITians Faculty 1281 Points
7 years ago
Dear student
You need to apply Limiting reagent concept here.
In this reaction
Since 2 mole Al gives 3 mole H2 thus 1 mole Al gives 1.5 mole H2
Also 6 mole HCl give 3 mole H2 thus 1 mle HCl gives 0.5 mole H2
Hence, HCl acts as limiting reagent and therefore option d is correct.

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