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What is the Action of Water on Magnesium ? Write Equation of the Chemical Reaction Involved. - Science

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प्रश्न

What is the action of water on magnesium ? Write equation of the chemical reaction involved.

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उत्तर

Magnesium does not react with cold water.
 (i) However, it reacts with steam rapidly to form magnesium hydroxide and hydrogen gas.
       Mg(s) + H2O(g) →  Mg(OH)2(aq)  + H2(g)

(ii) Magnesium reacts very rapidly with steam to form magnesium oxide and hydrogen gas.
  Mg(s) + H2O(g) →  MgO(s)  +  H2(g)

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पाठ 3: Metals and Non-metals - Exercise 1 [पृष्ठ १३४]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 3 Metals and Non-metals
Exercise 1 | Q 54.2 | पृष्ठ १३४

संबंधित प्रश्‍न

Write equations for the reactions of calcium and potassium with water.


Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.

Metal Iron (II) sulphate Cooper (II) sulphate Zinc sulphate Silver nitrate
A No reaction Displacement    
B Displacement   No reaction  
C No reaction No reaction No reaction Displacement
D No reaction No reaction No reaction No reaction

Use the Table above to answer the following questions about metals A, B, C and D.

  1. Which is the most reactive metal?
  2. What would you observe if B is added to a solution of copper (II) sulphate?
  3. Arrange the metals A, B, C and D in the order of decreasing reactivity.

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Na  +  O2 →


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What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.


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Metal A burns in air, on heating, to form an oxide A2O3 whereas another metal B burns in air only on strong heating to form an oxide BO. The two oxides A2O3 and BO can react with hydrochloric acid as well as sodium hydroxide solution to form the corresponding salts and water.
(a) What is the nature of oxide A2O3?
(b) What is the nature of oxide BO?
(c) Name one metal like A.
(b) Name one metal like B.


Which of the following reactions will not occur? Why not?

(a) MgSO(aq) + Cu (s) → CuSO(aq) + Mg (s)

(b) CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)

(c) MgSO4 (aq) + Fe (s) → FeSO4 (aq) + Mg (s)


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