![]() ![]() Potassium bromide should be stored in closed containers. ![]() The only feasible routes of exposure are through purposefully consuming the solid or drinking solutions, neither of which is likely to occur, so it can be regarded as safe, provided high direct exposures to the body are limited. Hydrobromic acid can also be used instead of elemental bromine for the first reaction:īromide ions are a cumulative poison, staying in the blood for over a week. KOH + Br 2 → KBr + HOBr KI + Br 2 → KBr + I 2 Reacting elemental bromine with potassium hydroxide or potassium iodide will produce the potassium bromide salt: Other than this it is rarely found in consumer outlets but can be found easily and cheaply online or at any chemical supply store. Potassium bromide is sometimes found as brominating tablets at pool stores as an alternative to chlorine. It does, however, have one of the highest known dipole moments. Potassium bromide, unusually, has covalent properties in the gas phase. If even small amounts of bromine is made in a reaction, the color of the solution shifts to a vivid orange as some bromine is somewhat soluble in a solution of bromide ions, forming the tribromide ion. It dissolves quite easily to form a clear solution. However, bromine is not as strong an oxidizer as chlorine, so chlorine will form bromine if reacted with a solution of bromide.īromide ions can be oxidized to bromate, which is a powerful oxidizer.Ī white, nondescript solid, its density is high, and often samples are much heavier than what one subconsciously expects the crystalline white powder to weigh. The reaction with sulfuric acid produces hydrobromic acid, in the same way the chloride analogue produces hydrochloric acid. e.g.,ġ♵8 × 10 –1 has three significant figures.Ĥ♲43 × 10 5 has four significant figures.ģ♲4 × 10 7 has three significant figures.Potassium bromide's properties are very similar to potassium chloride. In exponential notation, the numerical portion gives the number of significant figures. Geben Sie eine chemische Formel ein, um deren Molare Masse und elementare Zusammensetzung zu berechnen: Molare Masse of KBr(aq) is 119. ![]() e.g.,Ĥ. Zeros to the right of the decimal point are significant. All digits are significant including zeros if zero appears in between non-zero digits, e.g.,ģ. Zeros to the left of the first non-zero digit in a number are not significant, they merely indicate the positions of the decimal point. Except zero, all the digits 1, 2, 3, 4, 5, 6, 7, 8 and 9 are significant. Rules for determining the number of significant figures:ġ.
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