Vinegar, a common household item, is used in cleaning, cooking, baking and meat preservation. Vinegar contains acetic acid, CH3COOH, which gives vinegar its sour taste and pungent smell. What is the percent composition of carbon in acetic acid

Vinegar is a common household item which contain 5-8% of  acetic  acid and acetic acid contain 2 carbon that means 40.002% carbon is present in acetic acid.

Explanation:

Vinegar is found in liquid form which is produced by fermentation of ethanol that transform into acetic acid.Bacteria helps in fermentation process.

Vinegar contain water, acetic acid,with other added flavors like sweeteners,sugar, fruit juice etc.

It may be formed by juice of sugar cane, rice, other grapes, coconut water,apple cider etc.

The first conversion changes sugar into alcohol and the second conversion changes the alcohol into acetic acid.