2Na
|
+
|
O2
|
→
|
Na2O
|
Sodium
|
|
Oxygen
|
|
Sodium Oxide
|
|
|
|
|
|
Na2O
|
+
|
H2O
|
→
|
2NaOH
|
Sodium oxide
|
|
water
|
|
Sodium
hydroxide
|
Advertisement
An element X on reacting with oxygen forms an oxide X2O. This oxide dissolves in water and turns red litmus blue. State whether element X is a metal or a non – metal. Explain with proper example.
Ans. X is a metal
like Na or K.
Sodium combines
with oxygen, forms sodium oxide (Na2O). Sodium oxide dissolves in
water and forms an alkali, sodium hydroxide (NaOH). In sodium hydroxide, red
litmus turns blue.