Solve this: Q (a) Arrange the following in increasing order of Acidic character MnO2, Mn2O7, MnO (b) - Chemistry - The d-and f-Block Elements

Question

Solve this:
Q (a) Arrange the following in increasing order of Acidic
character
M n O 2 ,   M n 2 O 7 ,   M n O
(b) What happens when K M n O 4 is heated ? Give chemical
equation
(c) What are non-stoichiometric oxides ? Give one example

Vartika Jain · Accepted Answer

Dear Student,

(a) Acidic character increases with the increase in oxidation state of the central metal atom
 Oxidation state of Mn in MnO2 is +4, in Mn2O7 is +7 and in MnO is +2So, the order will be MnO < MnO2 < Mn2O7(b) Potassium permanganate on heating decomposes to give potassium mangante
2KMnO4 → K2MnO4 + MnO2 + O2 (c) The oxides in which metal to oxygen ratio is not whole number are called non-stoichiometric oxides
 For eg  Fe0 94O

Solve this: Q.(a). Arrange the following in increasing order of Acidic character. M n O 2 , M n 2 O 7 , M n O . (b) What happens when K M n O 4 is heated ? Give chemical equation. (c) What are non-stoichiometric oxides ? Give one example.

Solve this:
Q.(a). Arrange the following in increasing order of Acidic character.
$M n O_{2}, M n_{2} O_{7}, M n O$ .
(b) What happens when $K M n O_{4}$ is heated ? Give chemical equation.
(c) What are non-stoichiometric oxides ? Give one example.