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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.
It is often absorbed onto filter paper to produce one of the oldest forms of pH indicator, used to test materials for acidity. In an acidic medium, blue litmus paper turns red, while in a basic or alkaline medium, red litmus paper turns blue. In short, it is a dye and indicator which is used to place substances on a pH scale.
In an economy, production, consumption and exchange are carried out by three basic economic units: the firm, the household, and the government. Firms Firms make production decisions. These include what goods to produce, how these goods are to be produced and what prices to charge.
John Daly is on the mend after receiving emergency hand surgery. On Tuesday, Jan. 14, the golfer, 58, shared a photo of himself on his Instagram Stories lying in a hospital bed, giving a thumbs-up ...
A Colorado man is facing possible bias-motivated charges for allegedly attacking a television news reporter after demanding to know whether he was a citizen, saying “This is Trump’s America ...
Tech billionaire Elon Musk labeled a section of President-elect Trump supporters as “contemptible fools” as the online debate around visas for highly skilled workers on the right intensifies.
Blood pH is usually slightly basic, with a pH of 7.365, referred to as physiological pH in biology and medicine. Plaque formation in teeth can create a local acidic environment that results in tooth decay through demineralization. Enzymes and other Proteins have an optimal pH range for function and can become inactivated or denatured outside ...
NFL power rankings entering Week 18 of the 2024 season (previous rank in parentheses):. 1. Buffalo Bills (1): It would be a copout to cluster a half-dozen teams as tied for first place here ...