Question

what is acids and in which they are present ?​

Answer 1

Answer:

The terms acid and base describe chemical characteristics of many substances that we use daily. Acidic things taste sour. Basic or alkaline things taste soapy. Strong acids are corrosive and strong bases are caustic; both can cause severe skin damage that feels like a burn.  However, mild acids and bases are common and relatively harmless to us. What makes a substance acidic or basic? The following equation is a good place to start:

2 H2O ⇌ 1 H3O+ + 1 OH-

We begin with two water molecules, and move some hydrogen atoms around. One water molecule gains a hydrogen and therefore takes on a positive charge, while the other water molecule loses a hydrogen atom and therefore becomes negatively charged. H3O+ is called a hydronium ion, and it makes things acidic. OH- is called a hydroxyl ion and it makes things basic. However, in water, there is a balance between hydroniums and hydroxyls so they cancel each others' charges. Pure water is neither acidic or basic; it is neutral.

So how does something become acidic or basic? That happens when the hydroniums and the hydroxyls are out of balance. If there are more positively charged hydroniums than negatively charged hydroxyls, then the substance is acidic. If there are more negatively charged hydroxyls than positively charged hydroniums, then the substance becomes basic. pH actually stands for the "potential (or power) of hydrogen."

Explanation:

Answer 2

Answer:

Acids are common in daily life. They are found within cells and digestive systems, occur naturally in foods, and are used for many common chemical reactions. Common strong acids include hydrochloric acid, sulfuric acid, phosphoric acid, and nitric acid.

Explanation:

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