Questions: Acetic acid is a weak acid present in commercial vinegar that can be used to create a buffer solution. Phosphoric acid Acetic acid Hydrochloric acid Formic acid

Acetic acid is a weak acid present in commercial vinegar that can be used to create a buffer solution. Phosphoric acid Acetic acid Hydrochloric acid Formic acid
Transcript text: $\qquad$ is a weak acid present in commercial vinegar that can be used to create a buffer solution. Phosphoric acid Acetic acid Hydrochloric acid Formic acid
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Solution

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Solution Steps

Step 1: Identify the Weak Acid in Vinegar

Vinegar is a common household item that contains a weak acid. The primary acid present in commercial vinegar is acetic acid. This is well-known and widely used in various applications, including cooking and cleaning.

Step 2: Determine the Acid Suitable for Buffer Solution

A buffer solution is typically made from a weak acid and its conjugate base. Acetic acid is a weak acid that can effectively form a buffer solution when combined with its conjugate base, acetate.

Step 3: Evaluate Other Options
  • Phosphoric acid: While it is a weak acid, it is not the primary acid in vinegar.
  • Hydrochloric acid: This is a strong acid and not suitable for creating a buffer solution.
  • Formic acid: Although it is a weak acid, it is not commonly found in vinegar.

Final Answer

The weak acid present in commercial vinegar that can be used to create a buffer solution is \(\boxed{\text{Acetic acid}}\).

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