Balancing Chemical Equations Practice

This video tutorial demonstrates how to balance the chemical equation for H2SO4 and HI using a traditional method of counting atoms. The instructor explains the process step-by-step, starting with counting the atoms on both sides of the equation, then balancing oxygen and hydrogen, and finally adjusting iodine. The video concludes with a mention of the redox method as an alternative approach.

What is the initial approach suggested for balancing the equation of sulfuric acid and hydroiodic acid?

• Guessing the coefficients

• Using a calculator

• Counting atoms

• Using the redox method

How many hydrogen atoms are initially present on the reactant side?

• Five

• Two

• Four

• Three

What is the first element the instructor decides to balance?

• Sulfur

• Iodine

• Hydrogen

• Oxygen

What coefficient is placed in front of H2O to balance the oxygen atoms?

• 5

• 4

• 3

• 2

Why is balancing hydrogen atoms considered tricky in this equation?

• They react with iodine

• They have a high atomic mass

• They are not present in the products

• They are present in multiple compounds

What coefficient is used in front of HI to balance iodine atoms?

• 8

• 6

• 4

• 2

How many iodine atoms are present after balancing the equation?

• Eight

• Six

• Four

• Two

What is the final step to ensure the equation is balanced?

• Adjusting the coefficient of sulfuric acid

• Adjusting the coefficient of iodine

• Adjusting the coefficient of water

• Adjusting the coefficient of hydroiodic acid

What method is suggested as often easier for balancing such equations?

• Trial and error

• Redox method

• Using a calculator

• Graphical method

What is the final balanced equation for the reaction?

• H2SO4 + 8HI → 4H2O + 4I2

• H2SO4 + 8HI → 4H2O + 4I2 + H2

• H2SO4 + 2HI → H2 + I2 + 2H2O

• H2SO4 + 4HI → 2H2O + 2I2 + H2