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Which of the following is a strong acid?

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Question: Which of the following is a strong acid?

Options:

  1. HCl
  2. CH3COOH
  3. H2CO3
  4. NH3

Correct Answer: HCl

Solution: 

HCl (hydrochloric acid) is a strong acid that completely dissociates in water.

Which of the following is a strong acid?

Practice Questions

Q1
Which of the following is a strong acid?
  1. HCl
  2. CH3COOH
  3. H2CO3
  4. NH3

Questions & Step-by-Step Solutions

Which of the following is a strong acid?
Correct Answer: HCl
  • Step 1: Understand what a strong acid is. A strong acid is an acid that completely breaks apart into ions when dissolved in water.
  • Step 2: Identify the options given in the question. Look for common strong acids like HCl, HNO3, or H2SO4.
  • Step 3: Check if HCl (hydrochloric acid) is one of the options. If it is, remember that it is a strong acid.
  • Step 4: Confirm that HCl completely dissociates in water, meaning it breaks down into H+ and Cl- ions.
  • Step 5: Conclude that HCl is a strong acid based on the definition and its behavior in water.
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