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4.2 - Strong Acids & Weak Acids Questions and Answers
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4.2 - Strong Acids & Weak Acids Questions and Answers A substance which forms an aqueous solution with a pH of less than 7 is defined as: An acid When acid molecules are added to water and split apart, we say that they 'ionise' or 'dissociate'. These two words both mean the same thing. ...

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  • October 2, 2024
  • 2
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • 42 strong acids weak acids questions and answ
  • a substance which forms an aqueous solution with a
  • which of the following substances are strong acids

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4.2 - Strong Acids & Weak Acids
Questions and Answers
A substance which forms an aqueous solution with a pH of less than 7 is defined as: -
answer An acid

When acid molecules are added to water and split apart, we say that they 'ionise' or
'dissociate'. These two words both mean the same thing. - answer

Strong acids ionise completely, whereas weak acids only partially ionise. - answer

Which of the following substances are strong acids?
- Ethanoic acid
- Sulfuric acid
- Hydrochloric acid
- Citric acid
- Nitric acid - answer Sulfuric acid
Hydrochloric acid
Nitric acid

The dissociation of weak acids is a reversible reaction, which means that the products
can react together to reform the acid. - answer True

For a weak acid, does the position of equilibrium lie to the left or the right? - answer
Left

Which of the following substances are weak acids?
(Select all that apply)
- Ethanoic acid
- Carbonic acid
- Hydrochloric acid
- Citric acid
- Nitric acid - answer Ethanoic acid
Carbonic acid
Citric acid

Carbonic acid is described as a weak acid.

Which of the following statements apply to carbonic acid?
- It does not fully ionise to release hydrogen ions
- It does fully dissociate to release hydrogen ions
- It will form a solution with a pH of more than 7

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