Balancing Redox Equations Quiz

What is an important aspect of balancing redox equations?

• Knowing the ratio of reacting chemicals

• Memorizing chemical formulas

• Ignoring oxidation numbers

• Focusing only on products

Which method involves the use of oxidation numbers to balance redox equations?

• Balancing by trial and error

• Using oxidation numbers method

• Balancing by inspection

• Using molecular weights

What can a change in oxidation number be related to?

• A change in temperature

• A change in electrons

• A change in pressure

• A change in volume

In what type of solutions do you need to use steps 5-7 for balancing redox equations?

• Neutral solutions

• Acidic or basic solutions

• Solid solutions

• Gaseous solutions

What role do water molecules, hydrogen ions, and hydroxide ions play in redox reactions?

• They are irrelevant

• They play an important role

• They are only present in solid form

• They are only present in gaseous form

What is the first step in the procedure for balancing redox equations using oxidation numbers?

• Assign oxidation numbers

• Calculate coefficients

• Balance hydrogen atoms

• Add water molecules

What should you use to determine the number of electrons transferred per reactant?

• Chemical formulas

• Color of the solution

• Temperature of the reaction

• Pressure of the system

How do you balance the O atoms in redox equations?

• Using H2O (l)

• Using O2 gas

• Using CO2 gas

• Using N2 gas

What should be added to both sides in basic solutions to balance redox equations?

• OH- (aq)

• H+ (aq)

• Cl- (aq)

• Na+ (aq)

What is formed when H+ (aq) and OH- (aq) are combined on the same side?

• H2O (l)

• O2 gas

• H2 gas

• CO2 gas