which of the following pair of compounds undergo displacement reaction when they react with each other .
• cu and AgNO3
• Ag and FeSO4
• Cu and NaCl
• Mg and NaCl
Please help me in solving this problem . please give the right answer.
Answers
Cu + 2AgNO3 → Cu(NO3)2 + 2Ag
Displacement Reaction
In above reaction, Cu is more reactive than Ag due to this it displaces Ag from AgNO3 and formation of Cu(NO3)2 and Ag takes place.
When a more reactive element displaces less reactive from it's salt solution or from it's compound is known as Displacement Reaction.
Therefore, Cu and AgNO3 shows displacement reaction.
Series of metals in the decreasing order is known as Reactivity series.
K = Potassium
Na = Sodium
Ca = Calcium
Mg = Magnesium
Al = Aluminum
Zn = Zinc
Fe = Iron
Pb = Lead
H = Hydrogen
Cu = Copper
Hg = Mercury
Ag = Silver
Au = Gold
(Reactivity decreases down the group. Means, Potassium is most reactive metal and Gold is least reactive. )
Which of the following pair of compounds undergo displacement reaction when they react with each other?
✝️What is displacement reaction:-
It is a chemical change in which more active (reactive) element displaces less active element from its salt solution.
♦For Example:-
Here it is noticed that zinc is more active (reactive) than copper so it displaces copper from its salt solution i.e., Cupper sulphate
Here it is noticed that magnesium is more active as compared to hydrogen, so it displaces hydrogen from the dilute sulphuric acid