The electrolyte in an electrolytic cell conducts electricity.
True
The anode is the positive electrode where oxidation occurs.
Arrange the steps of the electrolysis process in the correct order:
1️⃣ Electric current is applied
2️⃣ Ions move towards electrodes
3️⃣ Oxidation occurs at the anode
4️⃣ Reduction occurs at the cathode
5️⃣ Compound is decomposed
At which electrode does oxidation occur in an electrolytic cell?
Anode
Electrolysis is a process where an electric current is used to break down a chemical compound into its constituent elements
What is the role of the electrolyte in an electrolytic cell?
Conducts electricity
Match the component with its role in an electrolytic cell:
Electrolyte ↔️ Conducts electricity
Electrodes ↔️ Conducts current into and out of electrolyte
Anode ↔️ Positive electrode where oxidation occurs
Cathode ↔️ Negative electrode where reduction occurs
Oxidation occurs at the cathode in an electrolytic cell.
False
What occurs at the anode in an electrolytic cell?
Oxidation
The anode is the electrode where the oxidation half-reaction occurs.
Cations move towards the cathode during electrolysis.
True
Electrolysis is a process where an electric current is used to break down a chemical compound.
Steps in describing the roles of the anode and cathode:
1️⃣ Identify the anode as the positive electrode
2️⃣ Explain that oxidation occurs at the anode
3️⃣ Identify the cathode as the negative electrode
4️⃣ Explain that reduction occurs at the cathode
The reduction half-reaction occurs at the cathode.
What are the products of electrolysis of aqueous copper(II) sulfate with inert electrodes?
Copper and oxygen
How does a higher current affect the rate of electrolysis?
Increases it
A larger surface area of electrodes increases the rate of electrolysis.
True
What is the role of the electrolyte in electrolysis?
Conducts electricity
The electrodes provide a conductive surface for the electric current to enter and leave the electrolyte.
The electrolyte in an electrolytic cell conducts electricity
The electrolyte in an electrolytic cell contains charged particles called ions
The anode is where electrons are gained during electrolysis
False
What are the two types of reactions that occur during electrolysis?
Oxidation and reduction
In the electrolysis of aqueous copper(II) sulfate, copper metal is formed at the cathode
Increased temperature during electrolysis speeds up ion movement
Higher current provides more electrons per unit time to facilitate reduction at the cathode.
True
Higher voltage overcomes the activation barrier of half-reactions in electrolysis.
Match the industrial process with its description:
Metal Extraction ↔️ Extracts metals from their ores using electrolysis
Electroplating ↔️ Deposits a thin metal layer for durability or appearance
Electrochemical Synthesis ↔️ Produces chemicals like chlorine and sodium hydroxide
Electrochemical Energy Storage ↔️ Uses reversible reactions in batteries
Electrolysis is used in metal extraction to deposit the pure metal at the cathode.
Arrange the steps for designing and analyzing an electrolysis experiment related to PAG3.
1️⃣ Formulate a hypothesis
2️⃣ Define independent and dependent variables
3️⃣ Identify control variables
4️⃣ Describe experimental setup
5️⃣ Collect data
6️⃣ Analyze the data
An example experiment involves electrolyzing copper sulfate at different voltages for 30 minutes.
Higher electrolyte concentration increases the availability of ions for redox reactions.
True
What is the role of electrode surface area in electrolysis?
More sites for reactions
In an experimental design, the mass of copper deposited at the cathode is measured under different conditions to analyze the effect of various factors.
What occurs at the cathode in an electrolytic cell?
Reduction
Oxidation always occurs at the anode in electrolytic processes.
True
What process do anions undergo when they reach the anode?
Oxidation
Match the component of an electrolytic cell with its role:
Electrolyte ↔️ Conducts electricity and contains ions
Anode ↔️ Positive electrode where oxidation occurs
Cathode ↔️ Negative electrode where reduction occurs
Which electrode do cations move towards during electrolysis?