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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Explain the following reaction with the balanced equation. Magnesium reacts with dil HCl

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प्रश्न

Explain the following reaction with the balanced equation.

Magnesium reacts with dil HCl

टीपा लिहा
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उत्तर

When magnesium is treated with dilute hydrochloric acid, it forms magnesium chloride with release of hydrogen gas.

\[\ce{\underset{\text{Magnesium}}{Mg_{(s)}} + \underset{\text{Hydrochloric acid}}{2HCl_{(aq)}} -> \underset{\text{Magnesium chloride}}{MgCl_{2(aq)}} + \underset{\text{Hydrogen}}{H2↑}}\]

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पाठ 8: Metallugy - Explain the following reactions with the balanced equations

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संबंधित प्रश्‍न

Give one example each of which illustrates the following characteristics of a chemical reaction:

evolution of a gas


What do you observe when ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.


How will you obtain  Silver chloride from silver nitrate.

Also give balanced equations for the reactions


Give a balanced equation for the reversible catalytic reaction involving nitrogen as one of the reactants.


Select the correct answer for the statement given below:

The catalyst used in the catalytic reaction involving the reactants nitrogen and hydrogen.


Complete the statement by filling in the blank with the correct word:

The metal which reacts with steam and the reaction is reversible is ________.


In preparation of Aqua regia hydrochloric acid and _______ acid are mixed.


Classify the following metals based on their reactivity.
Cu, Zn, Ca, Mg, Fe, Na, Li, Hg

More reactive Moderately reactive Less reactive
     
     

Which of the following is the correct arrangement of the given metals in ascending order of their reactivity?

Zinc, Iron, Magnesium, Sodium


Which among the following alloys contain mercury as one of its constituents?


Compound X and aluminium are used to join railway tracks.

  1. Identify the compound X
  2. Name the reaction
  3. Write down its reaction.

A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the presence of air. Identify the metal and its ore and give the reaction involved.


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.


Explain the following

  1. Reactivity of Al decreases if it is dipped in HNO3
  2. Carbon cannot reduce the oxides of Na or Mg
  3. NaCl is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state
  4. Iron articles are galvanised.
  5. Metals like Na, K, Ca and Mg are never found in their free state in nature.

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.


An element A burns with golden flame in air. It reacts with another element B, atomic number 17 to give a product C. An aqueous solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A, B, C and D. Also write down the equations for the reactions involved.


Arrange the following as per the instruction given in the bracket:

Al, K, Mg, Ca (decreasing order of its reactivity)


Three metal samples of magnesium, aluminium and iron were taken and rubbed with sandpaper. These samples were then put separately in test tubes containing dilute hydrochloric acid. Thermometers were also suspended in each test tube so that their bulbs dipped in the acid. The rate of formation of bubbles was observed. The above activity was repeated with dilute nitric acid and the observations were recorded.

Answer the following questions:

(i) When the activity was done with dilute hydrochloric acid, then in which one of the test tubes was the rate of formation of bubbles the fastest and the thermometer showed the highest temperature?

(ii) Which metal did not react with dilute hydrochloric acid? Give reason.

(iii) Why is hydrogen gas not evolved when a metal reacts with dilute nitric acid? Name the ultimate products formed in the reaction.

OR

Name the type of reaction on the basis of which the reactivity of metals is decided. You have two metals X and Y. How would you decide which is more reactive than the other?


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