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The purplish-black color of solid potassium permanganate, and the intensely pink to purple color of its solutions, is caused by its permanganate anion, which gets its color from a strong charge-transfer absorption band caused by excitation of electrons from oxo ligand orbitals to empty orbitals of the manganese(VII) center.
This green color results from an intense absorption at 610 nm. In the laboratory, K 2 MnO 4 can be synthesized by heating a solution of KMnO 4 in concentrated KOH solution followed by cooling to give green crystals: [3] 4 KMnO 4 + 4 KOH → 4 K 2 MnO 4 + O 2 + 2 H 2 O. This reaction illustrates the relatively rare role of hydroxide as a ...
The following is a detailed list of results and scores from National Football League (NFL) games aired on Thursday Night Football.Starting with the 2006 NFL season, NFL Network was awarded the rights to air Thursday night games regularly (with some extra broadcasts on Saturday nights under the NFL Network Exclusive Game Series branding).
Potassium permanganate (KMnO 4) is a dark violet colored powder. Its reaction with glycerol (commonly known as glycerin or glycerine) (C 3 H 5 (OH) 3) is highly exothermic, resulting rapidly in a flame, along with the formation of carbon dioxide and water vapour:
The 2021–22 UEFA Champions League knockout phase began on 15 February with the round of 16 and ended on 28 May 2022 with the final at the Stade de France in Saint-Denis, France, to decide the champions of the 2021–22 UEFA Champions League. [1] A total of 16 teams competed in the knockout phase. [2]
A permanganate (/ p ər ˈ m æ ŋ ɡ ə n eɪ t, p ɜːr-/) [1] is a chemical compound with the manganate(VII) ion, MnO − 4, the conjugate base of permanganic acid.Because the manganese atom has a +7 oxidation state, the permanganate(VII) ion is a strong oxidising agent.
The demand for live televised football grew in the wake of England’s World Cup success, though the authorities remained reluctant. In April 1967, the Football League Management Committee rejected a £1m offer from BBC Television to show live League football on Thursday nights. They did, however, experiment with pay-per-view broadcasting.
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