Which of the following reactions can occur or not.explain
Zn + 2H -> Zn + H2
Fe + 2Ag -> Fe + 2Ag
Cu + Pb -> Cu + Pb
To determine whether a reaction can occur or not, we need to consider two important factors: the reactivity of the elements involved and the tendency to form stable compounds.
For the first reaction, Zn + 2H -> Zn + H2, we can see that zinc (Zn) reacts with hydrogen (H) to produce zinc (Zn) and hydrogen gas (H2). This reaction is known as a single replacement reaction.
Zinc is more reactive than hydrogen, so it can displace hydrogen from its compound and form a new compound. Therefore, this reaction can occur.
The second reaction, Fe + 2Ag -> Fe + 2Ag, shows iron (Fe) reacting with silver (Ag) to yield iron (Fe) and silver (Ag). In this case, iron is less reactive than silver, so it cannot displace silver from its compound.
As a result, this reaction cannot occur as written. It doesn't follow the principles of reactivity and displacement.
The final reaction, Cu + Pb -> Cu + Pb, involves copper (Cu) reacting with lead (Pb) to produce copper (Cu) and lead (Pb). Copper and lead have similar reactivities in the reactivity series, so they are not likely to displace each other from their compounds.
Based on this information, it is safe to say that this reaction cannot occur as written due to the lack of significant reactivity difference between copper and lead.