Balancing Chemical Reactions Steps

The video tutorial explains how to balance the chemical equation for iron(III) hydroxide reacting with nitric acid. It begins by identifying the atoms involved and their quantities, then focuses on balancing the nitrate ions as a polyatomic unit. The tutorial continues by adjusting the coefficients to balance hydrogen and oxygen atoms, ensuring the equation is balanced on both sides. The process is broken down into logical steps, making it easier to understand the balancing of chemical equations.

What is the initial chemical equation discussed in the video?

• FeO + H2O

• FeCl3 + HCl

• Fe2O3 + H2SO4

• Fe(OH)3 + HNO3

How many oxygen atoms are present in the reactants initially?

• Four

• Three

• Two

• One

Why is the nitrate ion treated as a single unit during balancing?

• It is a polyatomic ion that stays together.

• It reacts with water.

• It has a variable charge.

• It is easier to count as separate atoms.

What adjustment is made to balance the nitrate ions?

• Increase the coefficient of HNO3.

• Add more water molecules.

• Decrease the coefficient of Fe(OH)3.

• Remove oxygen atoms.

How many hydrogen atoms are present after balancing the nitrates?

• Four

• Five

• Six

• Seven

What coefficient is used in front of H2O to balance hydrogen atoms?

• 2

• 1

• 3

• 4

What is the final balanced equation for the reaction?

• Fe(OH)3 + 3HNO3 → Fe(NO3)3 + 3H2O

• Fe(OH)3 + 4HNO3 → Fe(NO3)3 + 4H2O

• Fe(OH)3 + HNO3 → Fe(NO3)3 + H2O

• Fe(OH)3 + 2HNO3 → Fe(NO3)3 + 2H2O

What is the main focus of the final balancing steps?

• Balancing iron atoms

• Balancing hydrogen and oxygen atoms

• Balancing nitrate ions

• Balancing water molecules

Who is the presenter of the video?

• Dr. D

• Dr. C

• Dr. B

• Dr. A