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Electrólise de NaCl(aq)

Electrólise de NaCl(aq). Carlos Corrêa Departamento de Química (FCUP) Centro de Investigação em Química (CIQ). H 2 O + NaCl. H 2 (g) + HO ¯(aq). Cl 2 (g). Cátodo:. 2 H 2 O(l) + 2 e ¯  H 2 (g) + 2 HO ¯ (aq).

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Electrólise de NaCl(aq)

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  1. Electrólise de NaCl(aq) Carlos Corrêa Departamento de Química (FCUP) Centro de Investigação em Química (CIQ)

  2. H2O + NaCl H2(g) + HO¯(aq) Cl2(g) Cátodo: 2 H2O(l) + 2 e¯H2(g) + 2 HO¯ (aq) 2 Cl¯(aq)C2(g) + 2 e¯ Ánodo:

  3. Carregadores de telemóvel sem uso 3 – 7 volts Fonte de corrente contínua?

  4. NaCl(aq) Como se reconhecem os produtos da electrólise? H2O +NaCl Cátodo Ánodo H2(g) + HO– Cl2(g) Com fenolftaleína: rosa Com KI: dá I2(s) (castanho)

  5. KI(aq) NaCl(aq)

  6. Electrólise de uma solução aquosa de NaCl NaCl(aq) KI(aq) - Clica + Petri tapada com placa de plástico

  7. Cl2(g) + 2 I–(aq)  I2(s) + 2 Cl–(aq) Cl2(g) KI I2 dissolvido em I–(aq) = I3–

  8. F I M

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