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12 gram of Mg will react completely with acid to give how many moles of H2??

12 gram of Mg will react completely with acid to give how many moles of H2??
 
 

Grade:11

1 Answers

Shubhanjay Varma
24 Points
6 years ago
Mg + 2HCl = MgCl2 + H2
So One mole of Mg reacts with 2 moles of H2 and gives 1 mole of H2
Now, as atomic weight of Mg=24, no. of moles of Mg present = 0.5
as 1 mole of Mg reacts with 2 moles of HCl to give 1 mole H2
0.5 moles of Mg will react with 1 mole of HCl to give 0.5 moles of H2

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