Vinegar contains acetic or ethanoic acid that has been diluted in water.
Tartaric acid is the acid found in grapes.
Malic and citric acids are two other acids found in grapes.
Lemon contains citric acid, which has the chemical formula C6H8O7.
Final Answer:
Vinegar → Acetic acid
Grapes → Tartaric acid
Lemon → Citric acid