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The Electrolysis of Solutions

Joanna van Dyk 9 questions 5.0 (1 rating) Updated 11 May 2016

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Questions in this 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

Information

Description
GCSE Chemistry (Reactivity Series, Metal Extraction and Electrolysis) Quiz on The Electrolysis of Solutions, created by Joanna van Dyk on 26/12/2015.
Language
English
Views
46
History
Created on 26 Dec 2015 · updated on 11 May 2016
Rating
5.0 out of 5 · 1 rating
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