Balancing Chemical Equations Concepts

This video tutorial demonstrates how to balance the chemical equation for the decomposition of iron(III) carbonate. It begins by counting the atoms on both sides of the equation, emphasizing the importance of correctly applying coefficients to balance the carbon and oxygen atoms. The tutorial provides a step-by-step approach, highlighting the strategy of leaving oxygen balancing to the end. Key tips include being cautious with subscripts and ensuring all atoms are accounted for. The video concludes with a balanced equation and a reminder of the importance of careful counting.

What is the first step in balancing the decomposition equation of iron III carbonate?

• Count the number of iron atoms.

• Count the number of oxygen atoms.

• Count the number of hydrogen atoms.

• Count the number of nitrogen atoms.

How many carbon atoms are present in the iron III carbonate molecule?

• Three

• Two

• One

• Four

What is the total number of oxygen atoms on the reactant side before balancing?

• Fifteen

• Twelve

• Nine

• Six

What should be done to balance the carbon atoms in the equation?

• Add a coefficient of 5 in front of CO2.

• Add a coefficient of 3 in front of CO2.

• Add a coefficient of 2 in front of CO2.

• Add a coefficient of 4 in front of CO2.

After balancing carbon atoms, how many oxygen atoms are there on the product side?

• Seven

• Nine

• Eleven

• Five

What is the key tip for balancing equations mentioned in the video?

• Balance oxygen atoms first.

• Balance hydrogen atoms first.

• Leave oxygen atoms to last.

• Leave carbon atoms to last.

What does the subscript '3' in the carbonate ion indicate?

• It applies only to carbon.

• It applies only to oxygen.

• It applies to both carbon and oxygen.

• It applies to neither carbon nor oxygen.

What is the final balanced equation for the decomposition of iron III carbonate?

• Fe2(CO3)3 → Fe + 3CO2

• Fe2(CO3)3 → 2Fe + CO2

• Fe2(CO3)3 → Fe + CO2

• Fe2(CO3)3 → 2Fe + 3CO2