Advertisements
Advertisements
प्रश्न
What do you observe when Magnesium ribbon is burnt in oxygen.
While burning a magnesium ribbon in air, state two observations of this activity.
Advertisements
उत्तर १
Magnesium ribbon burns with a dazzling white light and produces a white powder, which is magnesium oxide.
Reaction can be represented as:
\[\ce{2Mg + O2 -> \underset{(white powder)}{2MgO}}\]
उत्तर २
- Magnesium produces a dazzling white flame while burning.
- When magnesium burns, it reacts with oxygen to form a white, powdered material.
Notes
Students should refer to the answer according to their questions.
संबंधित प्रश्न
What do you observe when ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.
Write chemical equation for the event.
Iron filings are dropped in aqueous solution of copper sulphate.
Write chemical equation for the event.
Electrolysis of alumina is done.
Give a balanced equation for the reversible catalytic reaction involving nitrogen as one of the reactants.
Explain the following reaction with the balanced equation.
Sodium burns in air
Which among the following statements is incorrect for magnesium metal?
Compound X and aluminium are used to join railway tracks.
- Identify the compound X
- Name the reaction
- Write down its reaction.
A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and black coloured product and also explain the reaction of M with oxygen.
A solution of CuSO4 was kept in an iron pot. After few days the iron pot was found to have a number of holes in it. Explain the reason in terms of reactivity. Write the equation of the reaction involved.
Of the three metals X, Y and Z. X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity.
