4.2.5 Strong and weak acids

• Acids taste sour.


  True
• Match the property with the correct type of acid.

  Complete dissociation ↔️ Strong acids

  Partial dissociation ↔️ Weak acids
• Give an example of a weak acid.

  Carbonic acid
• Name an example of a strong acid.

  Hydrochloric acid
• What is an example of a weak acid?

  Carbonic acid
• Hydrochloric acid is an example of a strong acid.


  True
• Weak acids produce a low concentration of H+
• Weak acids result in a lower concentration of H+
• Strong acids exhibit excellent electrical conductivity
• What determines whether an acid is classified as strong or weak?

  Extent of dissociation
• Strong acids have poor electrical conductivity.

  False
• What type of ionization occurs in strong acids?

  Complete ionization
• Match the acid type with its example:

  Strong acid ↔️ Sulfuric acid (H2SO4)

  Weak acid ↔️ Carbonic acid (H2CO3)
• What color does blue litmus paper turn in an acid?

  Red
• Strong acids have high electrical conductivity
• Strong acids release a high concentration of H+
• Weak acids produce a lower concentration of H+ ions than strong acids.


  True
• Match the property with the correct type of acid.

  High corrosivity ↔️ Strong acids

  Low electrical conductivity ↔️ Weak acids
• Why do weak acids have poor electrical conductivity?

  Low H+ concentration
• Give an example of a weak acid.

  Carbonic acid
• What type of acids only partially dissociate in water?

  Weak acids
• Weak acids have high electrical conductivity.

  False
• Strong acids have a high concentration of hydroxide ions.

  False
• What is the typical pH range of strong acids?

  0-3
• Acetic acid is an example of a weak acid that undergoes partial ionization.
• Acids produce hydrogen ions (H+) when dissolved in water
• Order the following properties of strong and weak acids based on their degree of dissociation in water.

  1️⃣ Strong acids dissociate completely.

  2️⃣ Weak acids dissociate partially.
• Weak acids have a higher pH than strong acids.


  True
• What is the corrosivity of strong acids compared to weak acids?

  Higher
• Weak acids have lower corrosivity
• Strong acids produce a high concentration of H+ ions, leading to excellent electrical conductivity
• Order the properties of strong and weak acids from highest to lowest corrosivity.

  1️⃣ Strong acids have high corrosivity.

  2️⃣ Weak acids have lower corrosivity.
• What ions are released by strong acids when dissolved in water?

  Hydrogen ions (H+)
• List the characteristics of acids:

  1️⃣ Produce hydrogen ions (H+) in water

  2️⃣ Taste sour

  3️⃣ Turn blue litmus paper red

  4️⃣ Conduct electricity in aqueous solutions
• Strong acids result in a high concentration of H+ ions.
• Weak acids have a lower concentration of hydrogen ions compared to strong acids.

  True
• Which of the following is an example of a strong acid?

  Hydrochloric acid