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Write One Reaction in Which Aluminium Oxide Behaves as a Basic Oxide and Another in Which It Behaves as an Acidic Oxide. - Science

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प्रश्न

Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.

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उत्तर

When aluminium oxide reacts with hydrochloric acid, it behaves as a basic oxide:
  Al2O3(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2O(l)

When aluminium oxide reacts with a base like sodium hydroxide, it behaves as an acidic oxide:
  Al2O3(s) + 2NaOH(aq) → 2NaAlO2(aq) +  H2O(l)

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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 56.1 | पृष्ठ १३४

संबंधित प्रश्‍न

Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium


Name the following:
Metals which forms an amphoteric oxide.


Write the chemical reaction when iron reacts with dilute H2SO4.


What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.


Differentiate between metal and non-metal on the basis of their chemical properties.


A solution of _________________ in water is green in colour.

(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3


Why are metals called electropositive elements whereas non-metals are called electronegative elements?


Name the metal which has been placed just below copper in the reactivity series.


Which of the two metals is more reactive: copper or silver?


Fill in the following blank with suitable word:

The white powder formed when magnesium ribbon burns in oxygen is of ....................


Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.


You are given samples of three metals − sodium, magnesium and copper. Suggest any two activities to arrange them in order of their decreasing reactivities.


Name another metal oxide which behaves like aluminium oxide.


What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with eater.


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


Write the equation for the reaction of Aluminium with dilute hydrochloric acid.

Name the products formed. Also indicate the physical states of all the substances involved.


What is meant by the reactivity series of metals? Arrange the following metals in an increasing order of their reactivities towards water:
Zinc, Iron, Magnesium, Sodium


The least reactive metal among the following is:
(a) sodium
(b) silver
(c) copper
(d) lead


Calcium floats over water during the reaction with water. Give reason.  


Why is acidified water considered to be a good conductor of electricity?


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