Advertisements
Advertisements
प्रश्न
What is the nature of the oxide Na2O? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.
Advertisements
उत्तर
Sodium oxide is a basic in nature. Sodium oxide reacts with water to form an alkali called sodium hydroxide.
\[\ce{\underset{(Basic oxide)}{\underset{Sodium oxide}{Na2O_{(s)}}} + \underset{Water}{H2O_{(l)}} -> \underset{(An alkali)}{\underset{Sodium hydroxide}{2NaOH_{(aq)}}}}\]
APPEARS IN
संबंधित प्रश्न
Metal A has electronic configuration (2, 8, 1) and metal B has (2, 8, 8, 2). Which is more reactive? Why? Identify these metals.
Write equations for the reactions of calcium and potassium with water.
What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.
Food cans are coated with tin and not with zinc because ______.
The solution of Aluminium sulphate in water is .....................
(a) Green
(b) Colourless
(c) Pink
(d) Blue
State whether the following statement is true or false:
Non-metals react with dilute acids to produce a gas which burns with a ‘pop’ sound.
Write an equation for the reaction of:
Sodium with oxygen
With the help of examples, describe how metal oxides differ from non-metal oxides.
Which of the following elements would yield a basic oxide?
Na, S, C, K, H
Which of the following elements would yield a neutral oxide?
Na, S, C, K, H
A copper plate was dipped in AgNO3 solution. After certain time, silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved.
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
What special name is given to substances like aluminium oxide?
The elements whose oxides can turn litmus solution blue are ______.
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
- What is the nature of the oxide E2O?
- State whether element E is a metal or a non-metal.
- Give one example of an element like E.
Calcium floats over water during the reaction with water. Give reason.
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
(i) Good thermal conductivity
(ii) Good electrical conductivity
(iii) Ductility
(iv) High melting point
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
An alkali metal A gives a compound B (molecular mass = 40) on reacting with water. The compound B gives a soluble compound C on treatment with aluminium oxide. Identify A, B and C and give the reaction involved.
Metals are generally solid. Which of the following metals is in the liquid state at room temperature?
