How to Balance Equations with Polyatomic Ions

Описание: In this video, we will learn how to balance chemical equations that involve polyatomic ions. Polyatomic ions are molecules made up of two or more atoms that are covalently bonded together and carry a net charge.

PDF for Chart of Polyatomic Ions: https://www.breslyn.org/chemistry/nam...

When balancing chemical equations with polyatomic ions, we need to count the polyatomic ions as one unit if they appear on both sides of the equation. It can also be helpful to use a table to keep track of the number of atoms and polyatomic ions in the reactants and products.

First, we identify the polyatomic ions present in the equation and write them down in our table. Then, we count the number of atoms of each element in the reactants and products and fill in the table.

Next, we will start balancing the equation by adjusting the coefficients of the reactants and products.

Finally, we will double-check our work to make sure that the equation is balanced and that the number of atoms of each element and polyatomic ion is the same on both sides of the equation.

For a complete tutorial on balancing all types of chemical equations, watch my video:

• Balancing Equations in 5 Easy Steps:    • How to Balance Chemical Equations in 5 Eas...  
• More Practice Balancing:    • Balancing Chemical Equations Practice Prob...  

For help with moles to grams conversions and more:

• More Moles to Grams Practice:    • Practice: Converting between Moles and Grams  
• Molar Mass in Three Easy Steps:    • How to Calculate Molar Mass (Molecular Wei...  
• Understanding the Mole:    • Understanding the Mole (the basics)  
• Moles - Gram Conversions:    • Practice: Converting between Moles and Grams  
• How to Balance Chemical Equations:    • How to Balance Chemical Equations in 5 Eas...  
• Mole Ratio:    • How to Find  the Mole Ratio to Solve Stoic...  
• Reaction Stoichiometry:    • How to Solve Reaction Stoichiometry Proble...  

Chapters
0:00 – 1:04 Introduction and Example
1:04 - 1:30 What are Polyatomic Ions?
1:30 – 2:42 Balancing Demonstration
2:42 – 3:58 Practice Balancing
3:58 – 4:30 Wrap-Up