Consider the following reaction:
2CH3OH(g)+3O2(g)→2CO2(g)+4H2O(g) Each of the following molecular diagrams represents an initial mixture of the reactants. (Figure 1) How many CO2 molecules would be formed by complete reaction in each case? (Assume 100% actual yield.)
1 Answer
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The balanced reaction equation shows that it takes 2 CH₃OH molecules and 3 O₂ molecules to make 2 CO₂ molecules.
(a) There are 3 CH₃OH molecules and 3 O₂ molecules.
One CO₂ molecule will form.
There will be one CH₃OH molecule left unreacted.
(b) There are 2 CH₃OH molecules and 6 O₂ molecules.
One CO₂ molecule will form.
There will be three O₂ molecules left unreacted.
(c) There are 4 CH₃OH molecules and 3 O₂ molecules.
One CO₂ molecule will form.
There will be two CH₃OH molecules left unreacted.
