Acid, base and salt-SA (2023-2024-2)

Which of the following substances contain an alkali?

• Baking powder
• Coca cola
• Distilled water
• Vinegar

Which of the following pH numbers indicates a strong acid?

• 1
• 5
• 7
• 14

What two substance are formed when an acid and alkali react together in equal amounts?

• Salt and water
• Alkali and water
• Acid and water
• Acid and alkali

Which of the following is not the properties of alkalis?

• Slipery

• Have a pH less than 7

• The pH scale of alkalis from 8 - 14

• Corrosive

Acids produce _________ ions when they break down or dissocciate. 

• OH^-

• H₂O

• Cl^-

• H⁺

Select the name for the following acid: H₃PO₄

• Phosphoric acid
• Phosphorous acid
• Hydrophosphoric acid
• Perphosphoric acid

Which of the following statements is correct?

• Blue litmus paper turns red when placed in a base.
• Red litmus paper turns blue when placed in a base.
• Blue litmus paper stays blue when placed in an acid.
• Red litmus paper stays red when placed in a base.

Phenolphthalein turns from clear to pink when the pH turns

• Acidic

• Basic

• Neutral

• Ionic

What completely ionizes in solution?

• Weak acids

• Strong acids

• Strong Salts

• Neutral salts

A hydrogen ion, H⁺, is the same as a(n):

• Neutron

• Electron

• Proton

• Hydroxide ion