10 volumes of Hydrogen reacts with 10 volumes of Oxygen according to the following chemical equation: 2H2 (g) + O2 (g) 2H2O(g) (i) Identify the limiting reagent (ii) How many volumes of water vapour would be produced? (iii) What volumes of the excess reagent would remain unreacted?
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The balanced chemical equation for the reaction is,
2H
2
+O
2
→2H
2
O.
The volume of a gas is directly proportional to the number of moles.
Thus, 2 volumes of dihydrogen react with 1 volume of oxygen to form 2 volumes of water.
Thus, 10 volumes of dihydrogen react with 5 volume of oxygen to form 10 volumes of water.
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