CH3COOH is a pure substance. It is the chemical formula for acetic acid.
Vinegar is not a metal. It is a mixture of water and acetic acid.
Hydrochloric acid is a mixture, generally HCl + water.Note that in English HCl (pure, as a gas) is called hydrogen chloride.
Cider vinegar is not a pure substance it is a mixture. It contains water, acetic acid and flavouring agents. As there is only one phase present ie no gas or solids it is a homogeneous mixture.
Vinegar from supermarkets is a mixture of water and acetic acid, PURE acetic acid/vinegar is a compound.
There are 90 liters of pure acid in the mixture because 120 x 0.75 = 90.
Citric acid (if pure and in the anhydrous form) is a single molecule with the formula C6H8O7. So - NO - citric acid is a compound, but not a mixture.
Technically, a compound. This is such a strong acid that it is almost always diluted and thus a mixture.
pure substance
CH3COOH is a pure substance. It is the chemical formula for acetic acid.
Vinegar is not a metal. It is a mixture of water and acetic acid.
Vinegar is acetic acid diluted to 5 or 10 percent with water, so that you won't burn your mouth if you drink pure acetic acid.
it is diluted Edited: It is NOT diluted. It is neutralized.
In its pure form it is a compound: sulphuric acid. But usually it is a mixture of sulphuric acid and lead sulphate.
Vinegar is consisted of diluted acetic acid (CH3COOH), which is a weak acid. Acetic acid in vinegar ranges from 4 to 8 percent by volume.
Vinegar is mainly diluted acetic acid. For a much longer and more complete explanation, see the question "What is vinegar?".
Vinegar is diluted acetic acid-- it is as flavoring and in pickling.