Which of the following is non-metal displacement reaction ?
Which of the following is non-metal displacement reaction ?
The correct option is A
Displacement reactions : These reactions are redox reactions in which one element of the compound is replaced by atom or ion of another element. It can be represented as
AB+C⟶AC+B
The necessary condition, for the reaction is that C is more reactive than B. Since B and C are in their elemental state, the reaction is a redox reaction, where the main step involves the movement of electrons from one reactant to another. Displacement reactions can be further classified on the basis of nature of displacing element, into metal and non-metal displacements.
Non-metal displacement: The non-metal displacement reactions involve displacement of hydrogen and in some cases oxygen. The hydrogen displacement reactions are listed as follow.
Metals replacing hydrogen from cold water: All alkali and some alkaline earth metals, such as Ca, Sr and Ba, displace hydrogen from cold water and are strong reducing agents.
2K(s)+2H2O(l)⟶2KOH(aq)+H2(g)
Ba(s)+2H2O(l)⟶Ba(OH)2(aq)+H2(g)
The hydrogen displaced from water has electropositive character. In the above reactions, the more electropositive K and Ba displace the relatively less electropositive Hydrogen from H2O.
Displacement reactions : These reactions are redox reactions in which one element of the compound is replaced by atom or ion of another element. It can be represented as
AB+C⟶AC+B
The necessary condition, for the reaction is that C is more reactive than B. Since B and C are in their elemental state, the reaction is a redox reaction, where the main step involves the movement of electrons from one reactant to another. Displacement reactions can be further classified on the basis of nature of displacing element, into metal and non-metal displacements.
Non-metal displacement: The non-metal displacement reactions involve displacement of hydrogen and in some cases oxygen. The hydrogen displacement reactions are listed as follow.
Metals replacing hydrogen from cold water: All alkali and some alkaline earth metals, such as Ca, Sr and Ba, displace hydrogen from cold water and are strong reducing agents.
2K(s)+2H2O(l)⟶2KOH(aq)+H2(g)
Ba(s)+2H2O(l)⟶Ba(OH)2(aq)+H2(g)
The hydrogen displaced from water has electropositive character. In the above reactions, the more electropositive K and Ba displace the relatively less electropositive Hydrogen from H2O.
