Essential Chemistry for IGCSE - Chemical Calculations (Section 3 - No. 34)
In the reaction, Mg + 2HCl -> MgCl2 + H2, if you have 1 mole of Mg and excess HCl, how many moles of H2 will be produced?
0.5 mole
1 mole
2 moles
3 moles
Explanation
The mole ratio between Mg and H2 is 1:1.
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