Balancing Chemical Equations Video Lessons

Video Thumbnail

Concept: Balancing Chemical Reactions

Problem: Write a balanced chemical equation for the following and classify the reaction. Heating solid potassium chlorate in the presence of manganese dioxide catalyst produces potassium chloride and oxygen gas.

FREE Expert Solution

Before balancing the chemical reaction, let’s first write the chemical formula of each of the compounds involved in the reaction.


Reactants:

Potassium Chlorate (solid)

• Potassium is a metal from group 1A. It forms ionic compounds as K+

• Chlorate is a polyatomic anion with the formula ClO3-

When ions combine, their charges or oxidation numbers crisscross to become subscripts

          • K+ will have a subscript of 1 from ClO3- → K

          • ClO3- will have a subscript of 1 from K+ → ClO3

          • Subscript 1 is no longer indicated → KClO3(s)

Heat

• Heat has no chemical formula.

• It is used to drive the reaction forward.

• Since the reaction consumes heat to proceed, the reaction is endothermic.


99% (129 ratings)
View Complete Written Solution
Problem Details

Write a balanced chemical equation for the following and classify the reaction. 

Heating solid potassium chlorate in the presence of manganese dioxide catalyst produces potassium chloride and oxygen gas.


Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Balancing Chemical Equations concept. You can view video lessons to learn Balancing Chemical Equations. Or if you need more Balancing Chemical Equations practice, you can also practice Balancing Chemical Equations practice problems.