Define acid and explain two chemical properties of acid and write example for each property
Answers
Answer:
Acid :A substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind.
Chemical properties of acid:
Acids change the colour of litmus from blue to red.
They convert the colour of Methyl Orange from Orange/Yellow to Pink.
Acids turn the pink colour of Phenolphthalein to colourless.
Acids can conduct electricity.
Some Acids are highly corrosive in nature which means that they corrode or rust metals.
Acids lose their acidity when mixed with a base.
When equal amounts of acid and base are combined the process of neutralization occurs and salt and water is formed,
Answer:
An acid is a chemical species that donates protons or hydrogen ions and/or accepts electrons. Most acids contain a hydrogen atom bonded that can release (dissociate) to yield a cation and anion in water. The higher the concentration of hydrogen ions produced by an acid, the higher its acidity and the lower the pH of the solution
PROPERTIES OF ACIDS:
1) Acids change the colour of litmus from blue to red.
2) They convert the colour of Methyl Orange from Orange/Yellow to Pink.
3) Acids turn the pink colour of Phenolphthalein to colourless.
4) Acids can conduct electricity.
5) Some Acids are highly corrosive in nature which means that they corrode or rust metals.
6) They produce H+ ions when mixed with water.
7) Acids lose their acidity when mixed with a base
8) The pH value of acid is from 0-6.
Example1: MgCO3 + 2HCl è MgCl2 + CO2 + H2O
Example2: CaCO3 + 2HCl è CaCl2 + CO2 + H2O