Question

The electrode potential of some element are
given as below:-

k+/k = - 2:36 V
Ag+/Ag = + 0.80 V
Zn2+/Zn = -0.76V
Cu2+/Cu= +0.34 V
Answer following questions

i) Arrange the element in increasing order of reactivity.
ii) Namely metal which can be replaced by Zn from their solution.
iii) Name the element which act as strong redusing agent.
iv)Name the element which act as an from strong oxidising agent.
,​

Answer 1

Answer:

Answer

Lower the reduction potential better is the reducing agent.

Among these four Mg is having least reduction potential so it is best

i) Arrange the element in increasing order of reactivity.

≈ Li<Na<K<Rb<Cs: Reactivity increase down the group as it can easily lose the electron since electrons are loosely bonded to the nucleus.

ii) Namely metal which can be replaced by Zn from their solution.

≈ transition metal

Represented in the periodic table as Zn, zinc is a transition metal, grouped with cadmium and mercury. With the middling atomic number 30, it has five stable isotopes of atomic weight from the dominant zinc 64 to zinc 70, plus an extra 25 radioisotopes.

iii) Name the element which act as strong redusing agent.

≈ Na is the strongest reducing agent while Cl- is the weakest reducing agent.

iv)Name the element which act as an from strong oxidising agent.

≈ Answer

Electroni configuration of Ce=[Xe]4f

1

5d

1

6s

2

Formation of Ce

+4

is favoured by its noble gas configuration due to which it shows +4 oxidtion state.

It can be easily converted into Ce

+3

, due to which Ce

+4

acts as an oxidising agent.