Understanding Strong and Weak Bases

What happens when a strong base like NaOH is dissolved in water?

• It completely dissociates into Na+ and OH- ions.

• It partially dissociates into ions.

• It forms a precipitate.

• It remains undissolved.

Which of the following is an example of a Bronsted-Lowry base reaction?

• NaOH dissociating in water.

• CH3- reacting with NH3 to form CH4 and NH2-.

• HCl dissociating in water.

• NH3 reacting with HCl to form NH4Cl.

What characterizes a weak base in solution?

• It dissociates completely.

• It does not dissociate at all.

• It establishes an equilibrium with its ions.

• It reacts violently with water.

Which group of elements should you memorize for strong bases on the MCAT?

• Noble gases

• Transition metals

• Alkaline metals and alkaline earth metals

• Halogens

How is the strength of a base typically measured?

• By its color change in solution

• Using pH and pOH values

• By its boiling point

• Using its density

What is the relationship between pH and pOH at 25 degrees Celsius?

• pH + pOH = 7

• pH + pOH = 14

• pH + pOH = 0

• pH + pOH = 1

In a solution with 0.01 M OH- concentration, what is the pOH?

• 10

• 12

• 1

• 2

If you have 0.05 moles of calcium hydroxide in 500 mL of water, what is the pH?

• 12

• 13

• 14

• 11

What is the leveling effect in the context of strong bases?

• All strong bases become as strong as OH- in water.

• All strong bases become weaker in water.

• All strong bases become stronger in water.

• All strong bases become neutral in water.

What resource is offered for those struggling with MCAT topics?

• Free online courses

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• Group study sessions

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