Neutralization Reaction Quiz

What materials are required for the neutralization experiment?

• Dilute acetic acid, concentrated sodium hydroxide solution, methyl orange

• Dilute hydrochloric acid, concentrated sodium hydroxide solution, bromothymol blue

• Concentrated sulfuric acid, dilute sodium hydroxide solution, litmus paper

• Dilute hydrochloric acid, dilute sodium hydroxide solution, phenolphthalein indicator

What happens when phenolphthalein is added to hydrochloric acid?

• The solution turns green

• The solution turns blue

• The solution remains colorless

• The solution turns pink

Why does the solution remain colorless when phenolphthalein is added to hydrochloric acid?

• Phenolphthalein is not soluble in hydrochloric acid

• Phenolphthalein is a weak acid and remains colorless in acidic solutions

• Phenolphthalein is a strong base

• Phenolphthalein reacts with hydrochloric acid to form a colorless compound

What is observed when sodium hydroxide is added to the acid-indicator mixture?

• The solution turns blue

• The solution remains colorless

• The solution turns pink

• The solution turns yellow

What happens when additional hydrochloric acid is added to the pink solution?

• The solution becomes colorless

• The solution turns blue

• The solution remains pink

• The solution turns green