Balancing Chemical Equations by Inspection

Balance the equations below by providing the proper coefficients:

(Examples 1-5 are answered with explanations, a-e are provided for extra practice - answers only are given.)

1. Al_(s) + Fe₂O_{3 (s)} Fe_(s) + Al ₂O_{3 (s)}

2. KClO_{3 (s)} + heat KCl_(s) + O_{2 (g)}

3. C₄H_{10 (g)} + O_{2 (g)} CO_{2 (g)} + H₂O_(g)

4. N_{2 (g)} + H_{2 (g)} NH_{3 (g)}

5. P_{4 (s)}+ F _{2 (g)} PF_{5 (g)}

Answers 1-5

a. Cu_(s) + AgNO_{3 (aq)} Cu(NO₃)_{2 (aq)} + Ag_(s)

b. Fe_(s) + O_{2 (g)} Fe₂O_{3 (s)}

c. FeCl_{3 (s)} + H₂O_(l) HCl_(aq)+ Fe(OH)_{3 (s)}

d. Zn(NO₃)_{2 (s)} + heat ZnO_(s) + NO_{2 (g)} + O_{2 (g)}

e. H₃PO_{4 (l)} + heat H₂O_(l) + P₄O_{10 (s)}

Answers a-e

In addition to these exercises you should familiarize yourself with the text materials.

Go to Reflection Questions

© R A Paselk

Last modified 24 September 2009