Question

What would be obserrved when 5% alkaline sol of pottasium permanganet?

Answer 1

Potassium permanganate is an inorganic chemical compound and medication. As a medication it is used for cleaning wounds and dermatitis.[2]

Potassium permanganateNamesIUPAC name

Potassium manganate(VII)

Other names

Potassium permanganate
Chameleon mineral
Condy's crystals
Permanganate of potash 
Hypermangan

Identifiers

CAS Number

7722-64-7 

3D model (JSmol)

Interactive image

ChemSpider

22810 

ECHA InfoCard100.028.874EC Number231-760-3KEGG

D02053 

PubChem CID

516875

RTECS numberSD6475000UN number1490

InChI

InChI=1S/K.Mn.4O/q+1;;;;;-1 

Key: VZJVWSHVAAUDKD-UHFFFAOYSA-N 

SMILES

[K+].[O-][Mn](=O)(=O)=O

Properties

Chemical formula

KMnO4Molar mass158.034 g/molAppearancepurplish-bronze-gray needles 
magenta–rose in solutionOdorodorlessDensity2.703 g/cm3Melting point240 °C (464 °F; 513 K) (decomposes)

Solubility in water

6.4 g/100mL (20 °C) 
25 g/100mL (65 °C)Solubilitydecomposes in alcohol and organic solvents

Magnetic susceptibility (χ)

+20.0·10−6 cm3/mol

Refractive index (nD)

1.59Structure

Crystal structure

OrthorhombicThermochemistry

Heat capacity (C)

119.2 J/mol K

Std molar
entropy (So298)

171.7 J K−1 mol−1

Std enthalpy of
formation (ΔfHo298)

−813.4 kJ/mol

Gibbs free energy(ΔfG˚)

-713.8 kJ/molPharmacology

ATC code

D08AX06 (WHO) V03AB18 (WHO)