Advertisements
Advertisements
प्रश्न
The white powder formed when magnesium ribbon burns in oxygen is of ______.
Advertisements
उत्तर
The white powder formed when magnesium ribbon burns in oxygen is of magnesium oxide.
Explanation:
When magnesium ribbon burns in the presence of oxygen, it undergoes a highly exothermic combination reaction, emitting a dazzling white flame. The magnesium atoms transfer electrons to oxygen atoms, forming ionic bonds that result in a brittle white powder. The balanced chemical equation representing this oxidation process is:
\[\ce{2Mg_{(s)} + O2_{(g)} -> 2MgO_{(s)}}\]
APPEARS IN
संबंधित प्रश्न
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
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 ______.
From amongst the metals sodium, calcium, aluminium, copper and magnesium, name the metal:
- which reacts with water only on boiling, and
- another which does not react even with steam.
Name the metal which has been placed at the top of the reactivity series.
What will happen if a strip of zinc is immersed in a solution of copper sulphate?
Magnesium liberates ______ gas on reacting with hot boiling water.
What is the action of water on aluminium? Write the equation of the chemical reaction involved.
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
The elements whose oxides can turn phenolphthalein solution pink are ______.
An acidic oxide is produced by the element ______.
An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be ______.
Zinc oxide is a metal oxide. Which of the following term best describes the nature of zinc oxide:
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.
\[\ce{CuSO4_{(aq)} + Fe_{(s)} -> FeSO4_{(aq)} + Cu_{(s)}}\]
\[\ce{FeSO4_{(aq)} + Zn_{(s)} -> ZnSO4_{(aq)} + Fe_{(s)}}\]
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
Name a metal for the given case:
It does not react with cold as well as hot water but reacts with steam.
Write the chemical equation of the above process.
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
