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Question

What are strong and weak acids? In the following list of acids, separate strong acids from weak acids. Hydrochloric acid, citric acid, acetic acid, nitric acid, formic acid, and sulphuric acid.


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Solution

Strong acid:

  • The acids which dissociate completely in an aqueous solution are known as strong acids.
  • Examples of strong acids are Hydrochloric acidHCl as well as Sulfuric acidH2SO4.

Weak acid:

  • The acids which dissociate partially in an aqueous solution are known as weak acids.
  • Examples of weak acids are Acetic acidCH3COOH as well as Formic acidHCOOH.

A list of strong acids, as well as weak acids, are:

Strong acids

Weak acids

  • Hydrochloric acid HCl
  • Citric acidC6H8O7
  • Sulfuric acid H2SO4
  • Acetic acid CH3COOH
  • Nitric acid HNO3
  • Formic acid HCOOH

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