Ethanol, C2H5OH burns v oxygen in air to offer carbon dioxide and also water. What is the amount (in moles) of water created from 0.51 mol C2H5OH? The equation is C2H5OH + 3O2 -----> 2CO2 + 3H2O.
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You are watching: Balanced equation for combustion of ethanol

This is an instance of a burning reaction. To answer this friend must first balance the equation.

The easiest means is to collection up the reaction equation without any kind of coefficients:

C2H6O + O2 --> CO2 + HOH

Now start balancing, first with carbon, then through hydrogen and also last the oxygen.

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This is an instance of a burning reaction. To answer this girlfriend must very first balance the equation.

The easiest way is to set up the reaction equation without any type of coefficients:

C2H6O + O2 --> CO2 + HOH

Now begin balancing, first with carbon, then with hydrogen and also last the oxygen.

There room 2 carbons ~ above the left and also 6 hydrogens for this reason you add a coefficient the 2 in former of the CO2 and also a 3 in prior of the water.

C2H6O + O2 --> 2 CO2 + 3 HOH

Now count the number of oxygen ~ above the product side and you get seven. One oxygen came from the ethanol for this reason you require 6 an ext from oxygen. Add a coefficient the 3 in front of the oxygen on the reactant side and also your reaction is balanced.

C2H60 + 3 O2 --> 2 CO2 + 3 HOH

This mirrors you the for every mole that ethanol, girlfriend will acquire 3 moles of water. So if you begin with 0.51 mole of ethanol, you will develop 3 x .51 or 1.53 moles of water.

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