20:00

PDF|

Guide for Electrolysis Practice Test

Quiz Electrolysis Practice Test

Free Test
/ 10

Quiz

1/10
Electrode materials - Inert and active electrodes
A copper(II) sulfate solution is electrolysed using copper electrodes. Compared with using platinum electrodes, what change is expected at the anode?
Select the answer
1 correct answer
A.
Copper ions are reduced and the anode gains mass
B.
Water is oxidised and the anode remains unchanged
C.
Copper atoms are oxidised and the anode gradually dissolves
D.
Sulfate ions are reduced and the anode becomes coated with copper

Quiz

2/10
Electrolytes and ionic conduction
A student states: “In an aqueous sodium chloride electrolysis cell, the electric current is carried through the solution by electrons moving between the electrodes.” Which correction is most accurate?
Select the answer
1 correct answer
A.
Electrons carry the current through the solution, while sodium and chloride ions carry it through the wires
B.
Sodium ions carry the current through the solution, while chloride ions carry it through the external circuit
C.
Positive and negative ions carry the current through the solution, while electrons carry it through the external circuit
D.
Chloride ions carry the current through the solution, while sodium ions carry it through the external circuit

Quiz

3/10
Electrolysis of molten ionic compounds
Molten lead(II) bromide is electrolysed using inert electrodes. Which combination correctly describes the products and the electrode reactions?
Select the answer
1 correct answer
A.
Lead forms at the anode by oxidation, while bromine forms at the cathode by reduction
B.
Lead forms at the cathode by reduction, while bromine forms at the anode by oxidation
C.
Bromine forms at both electrodes because bromide ions are present in the electrolyte
D.
Lead(II) bromide remains unchanged because its ions cannot move when molten

Quiz

4/10
Quantitative electrolysis - Charge, current, time, mass and gas volume calculations
A current of 2.00 A is passed through aqueous copper(II) sulfate for 1930 s. Assuming copper is deposited at the cathode according to Cu2+ + 2e− → Cu and using F = 96,500 C mol−1, what mass of copper is produced? (Ar(Cu) = 63.5)
Select the answer
1 correct answer
A.
0.635 g
B.
1.27 g
C.
2.54 g
D.
3.81 g

Quiz

5/10
Selective discharge of ions
During the electrolysis of concentrated aqueous sodium chloride using inert electrodes, hydrogen forms at the cathode instead of sodium metal. What explains this selective discharge?
Select the answer
1 correct answer
A.
Sodium ions are attracted to the anode, so they cannot reach the cathode
B.
Water is preferentially reduced at the cathode because it is easier to discharge than sodium ions
C.
Sodium ions react with chloride ions before reaching the electrode
D.
Chloride ions prevent sodium ions from gaining electrons at the cathode

Quiz

6/10
Advanced electrolysis - Electrical energy, cell voltage and current efficiency
A direct-current cell operates at 12 V and draws 2.0 A for 5 minutes. How much electrical energy does it receive?
Select the answer
1 correct answer
A.
7.2 kJ
B.
14.4 kJ
C.
1.2 kJ
D.
72 kJ

Quiz

7/10
Advanced quantitative electrolysis - Faraday's laws, charge, mass and gas volumes
A current of 2.00 A passes through an electrolytic cell for 15.0 minutes. What charge is transferred?
Select the answer
1 correct answer
A.
1.80 × 10³ C
B.
1.80 × 10⁴ C
C.
2.00 × 10² C
D.
3.00 × 10³ C

Quiz

8/10
Copper electrolysis - Recovery from solutions and electrolytic purification
During copper recovery from an acidic copper sulfate solution, a copper ion reaches the negative electrode. Which change occurs there?
Select the answer
1 correct answer
A.
It loses two electrons and becomes copper metal
B.
It gains two electrons and becomes copper metal
C.
It gains two electrons and becomes copper ions
D.
It loses two electrons and becomes copper ions

Quiz

9/10
Electrode equations - Half-equations and overall reactions
During electrolysis of molten lead(II) bromide with inert electrodes, which pair of electrode half-equations is correct?
Select the answer
1 correct answer
A.
Pb2+ + 2e- → Pb at the cathode; 2Br- → Br2 + 2e- at the anode
B.
Pb2+ → Pb + 2e- at the anode; 2Br- + 2e- → Br2 at the cathode
C.
Pb2+ + e- → Pb at the cathode; Br- → Br2 + e- at the anode
D.
Pb2+ + 2e- → Pb at the anode; 2Br- → Br2 + 2e- at the cathode

Quiz

10/10
Electrolysis of aqueous solutions - Product prediction and selective discharge
During electrolysis of concentrated aqueous sodium chloride with inert electrodes, the solution is stirred and the gases are collected separately. Which pair of products forms at the electrodes?
Select the answer
1 correct answer
A.
Hydrogen at the cathode and chlorine at the anode
B.
Sodium at the cathode and oxygen at the anode
C.
Hydrogen at the cathode and oxygen at the anode
D.
Sodium at the cathode and chlorine at the anode
Looking for more questions?Buy now

Electrolysis Practice Test Practice test unlocks all online simulator questions

Thank you for choosing the free version of the Electrolysis Practice Test practice test! Further deepen your knowledge on Assessment Test Simulator; by unlocking the full version of our Electrolysis Practice Test Simulator you will be able to take tests with over 1369 constantly updated questions and easily pass your exam. 98% of people pass the exam in the first attempt after preparing with our 1369 questions.

BUY NOW

What to expect from our Electrolysis Practice Test practice tests and how to prepare for any exam?

The Electrolysis Practice Test Simulator Practice Tests are part of the Assessment Test Database and are the best way to prepare for any Electrolysis Practice Test exam. The Electrolysis Practice Test practice tests consist of 1369 questions divided by 16 topics and are written by experts to help you and prepare you to pass the exam on the first attempt. The Electrolysis Practice Test database includes questions from previous and other exams, which means you will be able to practice simulating past and future questions. Preparation with Electrolysis Practice Test Simulator will also give you an idea of the time it will take to complete each section of the Electrolysis Practice Test practice test . It is important to note that the Electrolysis Practice Test Simulator does not replace the classic Electrolysis Practice Test study guides; however, the Simulator provides valuable insights into what to expect and how much work needs to be done to prepare for the Electrolysis Practice Test exam.

BUY NOW

Electrolysis Practice Test Practice test therefore represents an excellent tool to prepare for the actual exam together with our Assessment Test practice test . Our Electrolysis Practice Test Simulator will help you assess your level of preparation and understand your strengths and weaknesses. Below you can read all the quizzes you will find in our Electrolysis Practice Test Simulator and how our unique Electrolysis Practice Test Database made up of real questions:

Info quiz:

  • Quiz name:Electrolysis Practice Test
  • Total number of questions:1369
  • Number of questions for the test:50
  • Pass score:70%
  • Number of topics:16 Topics
Study topics:Number of questions:
  • Advanced electrolysis - Electrical energy, cell voltage and current efficiency:52 Questions
  • Advanced quantitative electrolysis - Faraday's laws, charge, mass and gas volumes:173 Questions
  • Copper electrolysis - Recovery from solutions and electrolytic purification:80 Questions
  • Electrode equations - Half-equations and overall reactions:123 Questions
  • Electrode materials - Inert and active electrodes:62 Questions
  • Electrolysis of aqueous solutions - Product prediction and selective discharge:190 Questions
  • Electrolysis of molten ionic compounds:69 Questions
  • Electrolytes and ionic conduction:71 Questions
  • Electrolytic cells - Components, polarity and circuit operation:87 Questions
  • Electroplating - Cell arrangements, coatings and applications:42 Questions
  • Extraction of aluminium - Electrolyte, electrodes and industrial operation:70 Questions
  • Industrial electrolysis of brine - Products and membrane cells:47 Questions
  • Practical electrolysis - Experimental methods, analysis, safety and environmental impacts:108 Questions
  • Quantitative electrolysis - Charge, current, time, mass and gas volume calculations:71 Questions
  • Redox reactions - Oxidation and reduction at electrodes:63 Questions
  • Selective discharge of ions:61 Questions

You can prepare for the Electrolysis Practice Test exams with our mobile app. It is very easy to use and even works offline in case of network failure, with all the functions you need to study and practice with our Electrolysis Practice Test Simulator.

Use our Mobile App, available for both Android and iOS devices, with our Electrolysis Practice Test Simulator . You can use it anywhere and always remember that our mobile app is free and available on all stores.

Our Mobile App contains all Electrolysis Practice Test practice tests which consist of 1369 questions that are divided by 16 topics and also provide study material to pass the final Electrolysis Practice Test exam with guaranteed success. Our Electrolysis Practice Test database contain hundreds of questions and Assessment Test Tests related to Electrolysis Practice Test Exam. This way you can practice anywhere you want, even offline without the internet.

BUY NOW