Question

$\left( a \right)$ With the help of examples, describe how metal oxides differ from non-metal oxides.
$\left( b \right)$ Which of the following would yield: $\left( 1 \right)$ an acidic oxide, $\left( 2 \right)$ a basic oxide, and $\left( 3 \right)$ a neutral oxide? $Na,S,C,K,H$

Answer 1

Hint: When metal and non-metal react with oxygen they form metallic and non-metallic oxides. Oxides can be acidic, basic and neutral depending on their chemical properties. Examples of oxides are $Nao,Mg{O_2},P{O_5}$ and $N{O_2}$ etc.

Complete step by step answer:
$\left( a \right)$ The metal oxides and non-metal oxides can be differentiated with the chemical property that is reaction with water. When metal oxides react with water it forms metal hydroxide (base). Let see the reaction with Sodium metal,
$NaO + {H_2}O \to NaOH + {H_2}$
This reaction shows that metal oxides are basic in nature and turn red litmus blue. For example Calcium oxide.
When non-metal oxide reacts with water it forms an acidic solution. Let see the reaction of water with a non-metal that is Sulphur $\left( S \right)$ .
$S{O_2} + {H_2}O \to {H_2}S{O_4}$
This reaction shows that non-metal oxides are acidic in nature and can be neutral. The acidic oxides turn blue litmus to red. For examples: sulphur dioxide
$\left( b \right)$ . Out of these given elements $Na$ and $K$ are metal so they would yield basic oxide, $S$ and $C$ are non metal they would yield acidic oxide and $H$ would yield neutral oxides.
Acidic oxide: $S,C$
Basic oxide: $Na,K$
Neutral oxide: $H$

Note:
Table given below summarizes the difference between acidic oxide and basic oxide.

Acidic oxides	Basic oxides
Formed when oxygen when reacts with non-metal	They are formed when oxygen reacts with metal
They react with water forming acidic compound	They react with water forming basic compound
They doesn’t react with acid	They doesn’t react with base
React with a bases forming a salt	React with a acid forming a salt
They have covalent bond	They have ionic bond
$pH$ is increased when dissolved in water	$pH$ is decreased when dissolved in water
They are also known as acid anhydride	They are also known as base anhydride