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प्रश्न
Write the equation for the reaction of:
Iron with dilute hydrochloric acid.
Name the products formed in the given case. Also indicate the physical states of all the substances involved.
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उत्तर
Iron reacts slowly with cold, dilute hydrochloric acid to give iron (II) chloride and hydrogen gas.
\[\ce{\underset{Iron}{Fe_{(s)}} + \underset{Hydrochloric acid}{2HCl_{(aq)}} -> \underset{Iron (II) chloride}{FeCl2_{(aq)}} + \underset{Hydrogen}{H2_{(g)}}}\]
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संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
A copper coin is kept immersed in a solution of silver nitrate for some time. What will happen to the coin and the colour of the solution?
Which of the two metals is more reactive?
Copper or silver
Complete and balance the following equation:
\[\ce{Na2O + H2O ->}\]
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.
What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.
Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium
What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.
Why is white phosphorus kept immersed under water?
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.
Name one metal which displaces copper from copper sulphate solution.
An acidic oxide is produced by the element ______.
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3 solution?
Out of aluminium, copper, calcium and tin, the most reactive metal is:
(a) aluminium
(b) copper
(c) tin
(d) calcium
The metals which can produce amphoteric oxides are:
(a) sodium and aluminium
(b) zinc and potassium
(c) calcium and sodium
(d) aluminium and zinc
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
(a) What is the nature of the oxide E2O?
(b) State whether element E is a metal or a non-metal.
(c) Give one example of an element like E.
Which of the following reactions will not occur? Why not?
(a) MgSO4 (aq) + Cu (s) → CuSO4 (aq) + Mg (s)
(b) CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)
(c) MgSO4 (aq) + Fe (s) → FeSO4 (aq) + Mg (s)
