Balancing Redox Equations Quiz

What is the half-reaction method used for in balancing redox equations?

• Building a house

• Solving algebraic equations

• Balancing redox equations

• Cooking pasta

Explain the steps involved in balancing redox equations using the half-reaction method.

• Combine the half-reactions, balance atoms, balance charges, multiply by a factor, and add together

• Write the unbalanced equation, combine into half-reactions, balance atoms, balance charges, and add together

• Write the balanced equation, split into half-reactions, balance atoms, balance charges, multiply by a factor, and add together

• Write the unbalanced equation, split into half-reactions, balance atoms, balance charges, multiply by a factor, and add together

How do you balance redox equations in acidic solutions?

• Balancing redox equations in acidic solutions involves separating the equation into half-reactions, balancing atoms and charges, and then equalizing the number of electrons transferred.

• Adding water to the equation

• Balancing only the charges in the equation

• Ignoring the number of electrons transferred

Explain the concept of adding H+ and H2O to balance redox equations in acidic solutions.

• Multiply H+ and H2O to balance the equation in acidic solutions.

• Subtract H+ and H2O to balance the equation in acidic solutions.

• Divide H+ and H2O to balance the equation in acidic solutions.

• Add H+ and H2O to balance the equation in acidic solutions.

Provide an example of balancing a redox equation in an acidic solution.

• 2Na(s) + 2H2O(l) -> 2NaOH(aq) + H2(g)

• 2H+(aq) + 2e- -> H2(g)

• Fe(s) + 2HCl(aq) -> FeCl2(aq) + H2(g)

• 2H2O(l) -> 2H2(g) + O2(g)

Explain the role of oxidation states in balancing redox equations.

• Balancing redox equations does not involve the concept of oxidation states

• Oxidation states are used to determine the color of the solution in redox reactions

• Oxidation states help in balancing the number of electrons gained and lost in a redox reaction.

• Oxidation states have no role in balancing redox equations

Identify the oxidizing agent and the reducing agent in the following redox reaction: 2K + 2H2O -> 2KOH + H2

• KOH and H2

• K and H2O2

• H2O and K

• K and O2