Clove oil is a mixture of compounds, but the main ingredient is eugenol, about 70-90%. Eugenol does have an acidic hydrogen, but it's not a compound i would call an acid, the acidic hydrogen is only a small part of the entire molecule.
it's pKa, measure of acidity, is about 10, so it's a very weak acid indeed.
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One of the products made out of clove trees is clove oil for pest control. Other products made of this plant are Kretek cigarettes, and acid washer vats.
Eugenia caryophyllata Syn. syzygium aromaticum
acid rain
Vinegar is usually a solution 9 % of acetic acid in water. The solubility difference of sugar between water and vinegar is not significant at equal temperature, granulation of sugar and volume, without stirring.
Alcohol is a term used for any O-H group that is attached to a carbon. Perhapes the alcohol is found in a Safranin stain. I hope I have this right but if alcohol was used as the decolorizing agent, it may wash out too much stain to get a good view in an oil emersion microscope.