Acids and Bases Regents

Why is potassium nitrate classified as an electrolyte?

• It is a molecular compound

• It contains a metal.

• It can conduct electricity as a solid.

• It releases ions in an aqueous solution.

Which two compounds are electrolytes?

• KOH and CH₃COOH

• KOH and C₅H₁₂

• CH₃OH and CH₃COOH

• CH₃OH and C₅H₁₂

When dissolved in water, an Arrhenius base yields

• hydroxide ions

• hydronium ions

• hydrogen ions

• oxide ions

Which compound is an Arrhenius acid?

• CaO

• HCl

• K₂O

• NH₃

Which type of reaction occurs when an Arrhenius acid reacts with an Arrhenius base to form a salt and water?

• combustion

• decomposition

• transmutation

• neutralization

Which acid and base react to form water and sodium sulfate?

• sulfuric acid and sodium hydroxide

• sulfuric acid and potassium hydroxide

• sulfurous acid and sodium hydroxide

• sulfurous acid and potassium hydroxide

Which indicator is blue in a solution that has a pH of 5.6?

• bromcresol green

• bromthymol blue

• methyl orange

• thymol blue

What is the color of the indicator thymol blue in a solution that has a pH of 11?

• red

• pink

• blue

• yellow

The table shows the concentrations of hydronium ions in different solutions. Which solution have the highest pH?

• A

• B

• C

• D

Compared to a 1.0-liter aqueous solution with a pH of 7.0, a 1.0-liter aqueous solution with a pH of 5.0 contains

• 10 times more hydronium

• 100 times more hydronium

• 10 times more hydroxide

• 100 times more hydroxide