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Quiz

The Electrolysis of Solutions

Joanna van Dyk 9 perguntas 5,0 (1 avaliação) Atualizado em 11 mai 2016

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Perguntas do quiz (9)

  1. 1In a mixture of ions it is the ion which is [blank_start]lower[blank_end] in the reactivity series that will be discharged and gain electrons (i.e. is [blank_start]reduced[blank_end])
    1. Alower
    2. Bhigher
    3. Creduced
    4. Doxidised
    5. Ethrown out of the window
  2. 2So as [blank_start]hydrogen[blank_end] is lower than [blank_start]sodium[blank_end] in the reactivity series it is the [blank_start]H+[blank_end] ion which is discharged and so the element [blank_start]H2[blank_end] will be formed.
    1. Ahydrogen
    2. Bsodium
    3. Csodium
    4. Dhydrogen
    5. EH+
    6. FNa +
    7. GH2
    8. HNa
  3. 3The half equation for this is:

    [blank_start]2H+[blank_end] + [blank_start]2e-[blank_end] = [blank_start]H2[blank_end]
    1. A2H+
    2. B2e-
    3. CH2
  4. 4At the anode [blank_start]oxygen[blank_end] is made unless a [blank_start]halide[blank_end] ion is present, in which case the [blank_start]halogen[blank_end] is made.
    1. Aoxygen
    2. Bhalide
    3. Chalogen
  5. 5Write the half equation for the formation of oxygen (from hydroxide ions) at the anode:

    [blank_start]4OH-[blank_end] = [blank_start]O[blank_end]2 + 2[blank_start]H2O[blank_end] + [blank_start]4e[blank_end]-
    1. A4OH-
    2. BO
    3. CH2O
    4. D4e
  6. 6What will be produced at the Cathode in the electrolysis of a potassium sulphate solution?
    1. AHydrogen
    2. BPotassium
    3. CSulphur
    4. DOxygen
  7. 7What will be produced at the anode in the electrolysis of a potassium sulphate solution?
    1. AOxygen
    2. BSulphur
    3. CPotassium
    4. DHydrogen
  8. 8What will be produced at the cathode in the electrolysis of a Magnesium Bromide solution?
    1. AHydrogen
    2. BMagnesium
    3. CBromine
    4. DOxygen
  9. 9What will be produced at the anode in the electrolysis of a Magnesium Bromide solution?
    1. ABromine
    2. BOxygen
    3. CHydrogen
    4. DMagnesium

Informações

Descrição
GCSE Chemistry (Reactivity Series, Metal Extraction and Electrolysis) Quiz sobre The Electrolysis of Solutions, criado por Joanna van Dyk em 26-12-2015.
Idioma
English
Visualizações
46
Histórico
Criado em 26 dez 2015 · atualizado em 11 mai 2016
Avaliação
5,0 de 5 · 1 avaliação
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