Question

Chemical properties of an acid include...

Answer 1

This is a list of well known characteristics of acids:

1) acids increase the concentration of hydronum ions ([H3O+]) when dissolved in water

2) acids taste sour

3) many are corrosive (the higher the acidity the higher the corrosive property)

4) when acids react with some metals produce hydrogen gas

5) acids conduct electricity (due to the presence of hydronium ions)

6) acids neutralize bases

7) acids combine with bases to produce water and salt

8) acids lower the pH of solutions.

They do not feel sticky to the touch. Bases fell slippery but there is not that property of sticky sensation about acids, although some highly concentrated strong acids have high viscosity. You cannot touch highly concentrated strong acids.

Answer 2

Answer: Option (a) is the correct answer.

Explanation:

Chemical properties are defined as the properties that show chemical nature of a substance or compound.

For example, toxicity, reactivity, combustion etc are all chemical properties.

Properties in which there is no change in chemical nature of a substance is known as physical property.

For example, solubility, density, volume, mass etc are all physical properties.

When a substance becomes corrosive in nature then it means oxidation of substance has occurred.

When concentration of hydrogen ions increases then it means acidity of a substance increases.

When an acid comes in contact with a metal then it releases hydrogen atoms.

For example, $2HCl + Mg \rightarrow MgCl_{2} + H_{2}$

When we add an acid to a base then it will result in the formation of salt and water.

For example, $HCl + NaOH \rightarrow NaCl + H_{2}O$

An acid does not feel slippery but a base feels slippery on touch.

Thus, we can conclude that chemical properties of an acid include corrosive, increases the concentration of hydrogen ions when added to water, forms hydrogen gas when it comes in contact with a metal, and forms salt and water when added to a base.