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The Electrolysis of Solutions

Joanna van Dyk 9 preguntas 5,0 (1 valoración) Actualizado el 11 may 2016

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Preguntas del test (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

Información

Descripción
GCSE (Reactivity Series, Metal Extraction and Electrolysis) Chemistry Test sobre The Electrolysis of Solutions, creado por Joanna van Dyk el 26/12/2015.
Idioma
English
Visitas
46
Historial
Creado el 26 dic 2015 · actualizado el 11 may 2016
Valoración
5,0 de 5 · 1 valoración
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