Can anyone give the properties of acid and bases?

Question

pls give me a simple explanation for this thanks a lot

Answer 1

Any compound that on dissociation gives (H+) ions is called an Acid.

Any compound that on dissociation gives(OH-) ions is called an Base.

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Answer 2

Acid and bases are conductors of the electrical current.

Upon chemically reacting with an active metal, acids will evolve hydrogen gas (H2):      Zn + 2 HCl(aq) ---> ZnCl2 + H2

Acids react with carbonates (and bicarbonates) to give carbon dioxide gas:      HCl + NaCO3 ---> CO2 + H2O + NaCl

Bases feel slippery, sometimes people say soapy

The word acid comes from the Latin word acere, which means "sour." All acids taste sour.

The word "base" has a more complex history and its name is not related to taste. All bases taste bitter.

According to Arrhenius:

Acid - any substance which delivers hydrogen ion (H+) to the solution.

Base - any substance which delivers hydroxide ion (OH¯) to the solution.

But Arrhenius theory cannot explain why NH3 is a base which can Bronsted-Lowry theory. So according to Bronsted-Lowry:

    * An acid is a substance from which a proton can be removed. An acid is a "proton donor.

    * A base is a substance that can remove a proton from an acid. A base is a "proton acceptor.

On the pH scale and on 25oC acids are between zero and lower than 7 and bases above 7 to 14

Answer 3

acids form a Hydrogen positive ion

while bases form a hydroxide (OH) negative ion.

well generally, acids are sour while bases are bitter ones :)

Answer 4

The meaning of acid

According to Arrhenius Theory an acid is a substance that produces hydrogen ion H+ or hydroxonium ions H3O+ when it dissolve in water. A substance can exhibit acidic properties because it can produce hydrogen ions or hydroxonium ions when it dissolves in the water. Without hydrogen ion, the aqueous solution will not exhibit acidic properties. Below are some of the examples when the substance dissolves in water and form hydrogen ions  

Actually hydrogen ion can not exist as free independent particle in aqueous, hydrogen ion will always combined with water to form the hydroxonium ions  Therefore the hydrogen ion dose not exists in the acidic solution but the hydroxonium ion is the actual ion that exists in an acidic solution. However hydrogen ion is use to replace hydroxonium ion in writing a formula, this is to simplify the formula writing and it is understood that the hydrogen ion is the hydroxonium ion.  

Acid have pH value less than 7. Beside that, acid have sour taste such as lemon and orange, they have citric acid. Acid change blue litmus paper into red colour, when acid examine with Universal Indicator, it give red, orange or yellow colour. When acid examine with Methyl orange, it will give red colour. Other than that, acid react with base to produce salt and water, acid react with metal to produce salt and hydrogen gas and it react with carbonate to produce salt, water and carbon dioxide.

Alkali

A base is a chemical substance that can react with acid to form salt and water. For example

Most base are not soluble in water, example of base are metal oxide and metal hydroxide that have oxide ions O-2 and hydroxide ion OH- such as copper(II) oxide, iron(III) oxide and magnesium hydroxide.

The reaction between base and acid is call the neutralisation, in this reaction the oxide ion O2- or the hydroxide ion OH- react with hydrogen ion H+ from acid to from water.

Therefore we can say that acid is a proton donor and base is a proton receiver.

Base the soluble in the water is known as alkalis, a few examples like sodium hydroxide, potassium hydroxide, calcium hydroxide and ammonia are alkali. Alkali can be defined as a chemical compound that produce hydroxide ions OH- when it is dissolve in the water. So base that can not dissolve in the water are still call the base but base that can be dissolve in the water are call alkali.

Alkali have pH value greater than 7, beside that alkali have bitter taste and it feel soapy. Alkali change red litmus paper into blue colour, when alkali is examine by Universal indicator, it will shows blue or purple colour, when alkali examine by Methyl orange, it will show yellow. Other than

that, when alkali react with acid, it will form salt and water.