Manganato de sódio

Manganato de sódio
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Identificadores
Número CAS
Propriedades
Fórmula química MnNa2O4
Massa molar 164.89 g mol-1
Aparência sólido verde profundo
Página de dados suplementares
Estrutura e propriedades n, εr, etc.
Dados termodinâmicos Phase behaviour
Solid, liquid, gas
Dados espectrais UV, IV, RMN, EM
Exceto onde denotado, os dados referem-se a
materiais sob condições normais de temperatura e pressão
Referências e avisos gerais sobre esta caixa.
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Manganato de sódio é o composto inorgânico com a fórmula Na2MnO4. Este sólido verde profundo é um análogo raramente encontrado do sal relacionado K2MnO4. Manganato de sódio é raro porque não pode ser prontamente preparado a partir da oxidação de dióxido de manganês e hidróxido de sódio. Em vez disso, essa oxidação para no nível de Na3MnO4 e esse sal de Mn(V) é instável em solução.[1] O manganato de sódio pode ser produzido pela redução do permanganato de sódio sob condições básicas:

4 NaOH + 4NaMnO4 → 4 Na2MnO4 + 2 H2O + O2

Como o NaMnO4 é difícil de preparar, o permanganato de sódio é mais caro que o permanganato de potássio.

Referências

  1. ↑ Arno H. Reidies (2002). «Manganese Compounds». Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a16_123 

Predefinição:Compostos de manganês

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