Balancing Chemical Reactions and Ions

The video tutorial explains a double displacement reaction involving iron(III) sulfate and potassium hydroxide. It demonstrates how to count atoms on each side of the equation and introduces a trick to simplify the balancing process by treating polyatomic ions as single units. The tutorial provides a detailed walkthrough of balancing the equation, adjusting coefficients, and ensuring all elements are balanced. The process is made easier by focusing on polyatomic ions, reducing the need to count individual atoms.

What type of reaction involves the exchange of ions between two compounds?

• Single displacement reaction

• Double displacement reaction

• Synthesis reaction

• Decomposition reaction

In a double displacement reaction, what happens to the ions?

• They remain unchanged

• They form a gas

• They change places

• They are destroyed

Why is it useful to count polyatomic ions as single units when balancing equations?

• It makes the equation more complex

• It changes the reaction type

• It simplifies the balancing process

• It increases the number of atoms

What is the first step in balancing the given chemical equation?

• Balance the sulfate ions

• Balance the potassium ions

• Balance the hydroxide ions

• Balance the iron ions

How many hydroxide ions are needed to balance the equation after adjusting for iron?

• Four

• Eight

• Two

• Six

What coefficient is placed in front of KOH to balance the hydroxide ions?

• Eight

• Four

• Two

• Six

After balancing hydroxide ions, what is the next step?

• Balance the potassium ions

• Balance the iron ions

• Balance the sulfate ions

• Balance the oxygen atoms

What coefficient is used for potassium sulfate to balance potassium ions?

• Three

• Four

• One

• Two

How does counting polyatomic ions as single units help in balancing equations?

• It complicates the process

• It increases the number of atoms

• It reduces the number of steps

• It makes the equation unbalanced

What is the final result of balancing the given chemical equation?

• The equation has more products

• The equation has more reactants

• The equation is balanced

• The equation remains unbalanced