Which of the following are alkaline? colas vinegar detergents lemon juice

You should have this in Chemistry, but I'll answer it anyway.

Colas are acid. Coke can do all sorts of horrible things to iron nails.

Vinegar is acid made from acidic acid.

Lemon Juice is also acidic.

Detergents are made from alkalines so they would be slightly alkaline.

lemon juice i think but im pretty sure

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