Classify these compounds as acid, base, salt, or other. NaOH, KCl, NH3, HNO3, HCOOH, CO2, NaBr, and CH3CH3?


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Classify these compounds as acid, base, salt, or other. NaOH, KCl, NH3, HNO3, HCOOH, CO2, NaBr, and CH3CH3?

Concepts and reason
The problem is based on the concept of acid, base and salt.
Acids are the electron acceptor or proton donor while bases are the compounds which can donate electron pair or can accept proton. Salts are the ionic compounds which are formed by the neutralization reaction of acid and base.

Fundamentals
Acids are the chemical species which can readily accept electrons or can donate proton. In aqueous solution, acid donates the proton. Strong acids dissociates completely in the aqueous solution.
Bases are the chemical species which can readily donates an electron pair or hydroxyl ion or can accept proton. In aqueous solution, the base donates the hydroxyl ion. Salt are the neutral chemical compounds which are formed by the reaction between acid and base.

Answer:

Consider the chemical reaction of HCOOH in the aqueous solution as follows:
image
Consider the chemical reaction of image in the aqueous solution as follows:
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Consider the chemical reaction of image in the aqueous solution as follows:
image
image

Methanoic acid imagedissociates to give methanoate ionimage and protonin image the aqueous solution. The compound which gives proton are termed as acid. Therefore, is the acidic compound.

Nitric acid imagedissociates to give nitrate ion image and proton image in the aqueous solution. The compound which gives proton are termed as acid. Therefore,image is the acidic compound.

In the aqueous solution, carbon dioxideimage gives carbonic acid imagewhich further dissociates to give hydrogen carbonate imageand proton image. The compound which gives proton are termed as acid. Therefore, image is the acidic.

Consider the chemical reaction of NaoH in the aqueous solution as follows:
image

The molecule of ammonia has lone pair. Therefore, image is a base.
From the compounds,NaOH and imageare basic in nature.

image