Academic Subjects
Chemistry
General Chemistry
Chemical Reactions
Balancing C3H5N3O9    CO2 + N2 + H2O + O2

Balance C3H5N3O9    CO2 + N2 + H2O + O2



__C3H5N3O9    __CO2 + __N2 + __H2O + __O2




Our reactant has all uneven numbers, whereas our products' are all even
let's fix that by multiplying the reactant by 2

2 C3H5N3O9    __CO2 + __N2 + __H2O + __O2



and now we adjust the products accordingly
leaving O till last



2 C3H5N3O9    6 CO2 + 3 N2 + 5 H2O + __ O2



element count

balancing chem

 6 C
10 H
 6 N
18 O

balancing chemical equation

 6 C
10 H
 6 N
19 O

chem equations

obviously, the O is giving us grief...
we have an extra O on the product side

So, how do we fix this? By cutting the O2 in half
1/2 O2 = 1 O



2 C3H5N3O9    6 CO2 + 3 N2 + 5 H2O + 1/2 O2



now, we can't go to the lab and meassure out 1/2 mole of O2
that's why we want to keep the coefficients as whole numbers at all times

the easiest way to fix this mess is to multiply the whole equation by 2



2 (2 C3H5N3O9    6 CO2 + 3 N2 + 5 H2O + 1/2 O2)

=

4 C3H5N3O9    12 CO2 + 6 N2 + 10 H2O + 1 O2



element count

balancing chem

12 C
20 H
12 N
36 O

balancing chemical equation

12 C
20 H
12 N
36 O