# How do you balance the following chemical equations by adding coefficients?

##
#HCI -> H_2O + NaCI#

#Fe_2O_3 + C -> Fe+ CO_2#

SO_2 + O_2 -> SO_3#

SO_2 + O_2 -> SO_3#

##### 1 Answer

Apr 27, 2016

#### Answer:

You do so stoichiometrically. Garbage out must equal garbage in.

#### Explanation:

(I am guessing that this is the equation you mean.)

(This is the reaction that would take place in an iron foundry.)

(You can double this equation if you dislike the fractional coefficient.)

Are all equations stoichiometrically balanced? If not, they should be.