Question

Most metals give rise to basic oxide Explain an experiment to support this statement

Answer 1

Answer:

Basic oxides are oxides that show basic properties in opposition to acidic oxides and that either

react with water to form a base; or

react with an acid to form a salt and water which are called neutralization reactions.

Explanation:

Basic oxides" is a compounds word of "Basic" and "oxides". The word oxides referred to the chemical compounds that one or more oxygen atoms combined with another element such as H2O or CO2. Based on their acid-base characteristics oxides can be classified into four categories: acidic oxides, basic oxides, and amphoteric oxides and neutral oxides.

Basic oxides, can also called base anhydrides which means "a base without water", are usually formed by reacting of oxygen with metals, especially alkali (+1 oxidation state) and alkaline earth metals (+2 oxidation state). Both of them are ionic oxide and can dissolve in water to form basic solutions of the metal hydroxide, whereas non-metals usually form acidic oxides. Basic oxide Li2O becomes base LiOH and BaO becomes Ba(OH)2 after react with water. In general, basicity of their oxides increases when the elements located downward at the left side of a periodic table (group 1 & 2), as the element become more metallic.[1]

Alkali Metals (Group 1)

X2O + H2O → 2XOH (X means group 1)

Alkaline Earth Metals (Group 2)

XO + H2O → X(OH)2 (X means group 2)

Examples include:

Sodium oxide, which reacts with water to produce sodium hydroxide

Magnesium oxide, which reacts with hydrochloric acid to form magnesium chloride