Quantitative Information from Balanced Equations


Remark: In a balanced equation, reactants and products are equivalent to each other.


Information from Balanced Equations
Equation2H2(g)+O2(g)2H2O (l)
Molecules2 Molecules H2+1 molecule O22 molecules H2O
Amount (mol):2 mols H2+1 mol O22 mols H2O

This is a balanced equation, hence we can say, 2 mol of H2 are equivalent to 1 mol of O2, and to 2 mol of H2O

Based on these equivalences, we can say that:

Hence, if # mol of any reactant is known, # mol of the product can be calculated as long as both are represented in a balanced equation.

A balanced equation contains the correct # mol for each of the reactants and products.
If their masses (in grams) were given instead, these should be converted into mol using the conversion equation between them.


Exercise on Mass Produced from Burning Butane

Check your answers here: Solution to the Exercise on Mass Produced from Burning Butane

For more details, please contact me here.
Date of last modification: Summer , 2019