The following substances are given: CaO, Cu (OH) 2, HCL, KBr, SO2, H2S, N2O5. which ones react with sodium hydroxide?
| April 14, 2021 | education
1. 2NaOH + Cu (OH) 2 = Na2 [Cu (OH) 4]. In the reaction of two alkalis, a complex hydroxide is formed – sodium tetrahydroxocuprate (II).
2. NaOH + HCl = NaCl + H2O. Formation of salt with acid.
3.2NaOH + SO2 = Na2SO3 + H2O. With sulfur oxide – sodium sulfite.
4. NaOH + H2S = Na2S + H2O. With hydrogen sulfide – sulfide.
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