Regents Acids Bases

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

When one compound dissolves in water, the only positive ion produced in the solution is H₃O⁺ (aq). This compound is classified as

• a salt

• a hydrocarbon

• an Arrhenius acid

• an Arrhenius base

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 word equation represents a neutralization reaction?

• base + salt → water + acid

• base + acid → salt + water

• salt + acid → base + water

• salt + water → acid + base

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