Page 39 - Ranger SPM 2022 - Science

Science SPM Chapter 6 Electrochemistry
Practice

Objective Questions

1. Which of the following is an electrolyte?
A Aluminium
B Ethane Carbon Figure 2Reserved.
Carbon
C Calcium carbonate electrode X electrode Y
D Lead(II) bromide Dilute sodium
chloride solution
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2. Figure 1 shows an electrolytic cell.
What are the products of electrolysis
accumulated at the X and Y electrodes?
X Y
X Y
Z A Hydrogen Oxygen

Figure 1 B Oxygen Hydrogen Form 5
Which of these parts are labelled C Hydrogen Chlorine
correctly?
D Chlorine Hydrogen
X Y Z
A Anode Cathode Electrolyte 5. A student conducts an investigation of
HOTS
HOTS the electrolysis of copper(II) sulphate
B Cathode Electrolyte Anode solution using an electrolytic cell as
C Electrolyte Anode Cathode shown in Figure 3.
D Cathode Anode Electrolyte

3. Which of the following factors does Carbon
not affect the product of electrolysis at electrodes Copper(II)
the electrodes during the electrolysis sulphate
solution
of aqueous solution?
A Concentration of ions in the Figure 3
aqueous solution What is the expected observation at
B Position of ions in the the electrode acting as the positive
electrochemical series terminal?
C Type of electrodes used A Colourless gas bubbles are
D Volume of the aqueous solution liberated
B Greenish-yellow gas bubbles are
4. Figure 2 shows the electrolysis of released
sodium chloride solution using an C Becoming thinner
electrolytic cell. D Becoming thicker

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