SODIUM BROMIDE NaBrProperties of sodium bromide NaBr: White. It melts without decomposition. Readily soluble in water (no hydrolysis). Reducer. Obtaining sodium bromide NaBr: 2 Na + E2 = 2NaE (normal temp., Е = F, Cl, Вr, I). 6 NaOH + 3 Br2 + 2(NH3-H2O) →(time) 6 NaBr + N2↑ + 8H2O (normal temp.). 2 NaI (cold) + E2 = 2NaE + I2↓ (E = Cl, Br) NaI (hot) + 3 H2O + 3Cl2 = NaIO3 + 6HCl. Reactions with sodium bromide NaBr: NaBr-2H2O = NaBr + 2H2O (t> 51° C, vacuum). NaBr (diluted) + 4 H2O = [Na(H2O)4](+) + Br(-) (pH 7). 2 NaBr (solid) + H2SO4 (conc. 10-50%, cold) = Na2SO4 + 2HBr 2 NaBr (solid) + 3 H2SO4 (conc.>50%, hot) = 2 NaHSO4 + Br2 + SO2 + 2H2O. 2 NaBr (hot) + Cl2 = 2 NaCl + Br2↑. 5 NaBr + 3 H2SO4(diluted) + NaBrO3 = 3Br2 + 3Na2SO4 + 3H2O 2 NaBr + 2 H2SO4 (conc.) + MnO2 = Br2 + Na2SO4 + MnSO4 + 2H2O (boiling). NaBr + 3 H2O →Electrolysis→ 3H2↑ (cathode) + NaBrO3 (anode). |
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Noble gasses are very unreactive elements and complete outer energy levels.