Question

What is the formula for acidic oxide?

Answer 1

Hint : Oxides are chemical compounds that contain one or more oxygen atoms along with another element. Oxides are oxygen-containing binary compounds with another constituent. The term oxides come from the fact that these compounds contain oxygen and only one other element.
Examples of oxides are: $CaO$ , $Ba{O_2}$ , $S{O_2}$ , $C{O_2}$ and many more.

Complete Step By Step Answer:
An oxide that, when mixed with water, produces acid is called an acidic oxide. If a litmus paper is dipped in a solution of an acidic oxide and water, then the litmus paper would turn red. Mostly, the reaction between non-metals and oxygen form acidic compounds of oxides. Sometimes acidic oxides are also formed when metals with high oxidation states react with oxygen. They are held by covalent bonds. Acidic oxides are also known as acid anhydrides. Except for compounds like ${B_2}{O_3}$ and $Si{O_2}$ , which have high melting points and form giant molecules, acid anhydrides usually have low melting and boiling points.
An acidic oxide does not have a particular chemical formula. However, it has to be noted that due to the fact that generally the reaction between non-metals and oxygen form acidic oxides, this results in the chemical formula of an acidic oxide to contain a non-metal and oxygen, generally.
Examples of acidic oxides are: $NO$ , $C{O_2}$ , $S{O_2}$ and many more.
Thus, an acidic oxide does not have a particular chemical formula.

Note :
It has to be noted that generally the chemical formula of an acidic oxide will contain a non-metal and oxygen. But sometimes the chemical formula of an acidic oxide can contain a metal and oxygen when the metal has high oxidation states. Some examples of acids which are both metallic oxides and acidic oxides are $M{n_2}{O_7}$ , $Cr{O_3}$ and more.