it turns blue litmus paper red
Because Vinegar is an acid, the litmus paper would turn red
If the vinegar is strong enough to be below 4.5 pH the litmus paper will turn (or stay) red.
HCl (hydrochloric acid) is an acid so it will turn litmus paper red. and alkali will go from red litmus to blue.
If if it is red Litmus paper, then it will remain red because vinegar is acidic. (Blue Litmus paper would turn red if you dipped it into vinegar).
Litmus paper turns red if the solution is acidic and blue if the solution is basic. Vinegar is an acidic solution (due to acetic acid), and will turn the litmus paper red.
Alkali turns litmus paper blue.
Litmus become blue in contact with basic substances.
Any acid will turn litmus paper red, Household examples would be most juices, vinegar, and carbonated drinks.
A household product that will turn litmus paper red is an acidic substance, such as vinegar or lemon juice. Acids have a pH below 7, which is the range that litmus paper turns red in.
The answer isn't so simple. There are various kinds of pH paper. However, I presume you are referring to litmus paper which is the widest distributed form. Acetic acid has no effeect on red litmus paper but turns blue litmus red
Since vinegar is an acid it would turn red.
The litmus paper would stay red. That means vinegar is an acid.