Question

Experiments related to displacement reaction are given below
1, A silver rod is dipped CuSo4
2,A zinc rod is dipped in CuSo4
In which case does displacement reaction occur. Why?

Answer 1

Answer:

I think 1is the correct answer

Answer 2

Answer:

Displacement reaction will occur in the case when a zinc rod is dipped in a $CuSO_4$ solution·

Explanation:

A displacement reaction is a chemical reaction in which, one reactant is displaced or replaced by the other reactant from its compound· Usually, more reactive elements displace a less reactive element from the compounds·

We can find out whether an element displaces another element, by looking at the reactivity series· Reactivity series is the series of metals, that are arranged based on the reactivity of the metals· Here, most reactive metals are placed at the highest position and least reactive metals are placed at the lowest position· So, metals that arranged at the top can displace a metal that arranged below·

Here totally of three metals are given· Silver, zinc, and copper metals· On the reactivity series, among the three metals, zinc metal is placed at first, then copper, and then the silver metal·So, zinc is more reactive among the three, which is followed by the copper metal and then the silver·

In the first case, a silver rod is dipped in $CuSO_4$ solution· Since the silver metal is less reactive than the copper metal, the silver metal cannot displace the copper metal from the copper sulphate solution· Hence, the displacement reaction does not happen·

In the second case, a zinc rod is dipped in $CuSO_4$ solution· Since the zinc metal is more reactive than the copper metal, the zinc metal will displace the copper from the copper sulphate solution and forms the zinc sulphate solution and the copper metal· Hence, here the displacement reaction will occur and the reaction follows,

$Zn\ +\ CuSO_{4} \ --->\ ZnSO_4\ +\ Cu$

Therefore, the displacement reaction will occur in the case when a zinc rod is dipped in a $CuSO_4$ solution·