Dissociation of Substances Quiz

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Questions and Answers

When water dissociates, it breaks apart into an equal number of

  • Hydrogen ions and chloride ions
  • Hydrogen ions and oxygen ions
  • Oxygen ions and hydroxide ions
  • Hydrogen ions and hydroxide ions (correct)

Which substance releases more hydrogen ions as it dissociates?

  • Water
  • Hydrochloric acid (correct)
  • Oxygen
  • Sodium hydroxide

What does the pH scale measure?

  • The concentration of hydroxide ions
  • The concentration of hydrogen ions
  • The concentration of oxygen ions
  • The concentration of both hydrogen and hydroxide ions (correct)

When a substance has a pH of 7, it is classified as

<p>Neutral (D)</p> Signup and view all the answers

What happens to the concentration of hydroxide ions as the pH of a substance increases?

<p>It increases (B)</p> Signup and view all the answers

What are the two ions that water dissociates into?

<p>hydrogen ions and hydroxide ions</p> Signup and view all the answers

Which substance releases more hydrogen ions as it dissociates?

<p>hydrochloric acid</p> Signup and view all the answers

Which substance releases more hydroxide ions?

<p>sodium hydroxide</p> Signup and view all the answers

What does the pH scale measure?

<p>the acidity or basicity of a substance</p> Signup and view all the answers

What is the pH of a substance that releases an equal concentration of hydrogen and hydroxide ions?

<p>7</p> Signup and view all the answers

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