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Questions and Answers
What is a compound whose solutions will not conduct current called?
What is a compound whose solutions will not conduct current called?
A strong acid is a type of non-electrolyte.
A strong acid is a type of non-electrolyte.
False
What is the effect of 1 mol of strong electrolyte on the freezing point of a pure solvent?
What is the effect of 1 mol of strong electrolyte on the freezing point of a pure solvent?
It has a greater effect than 1 mol of non-electrolyte.
An electrochemical cell is a device that can generate ____________________ energy from the chemical reactions occurring in it.
An electrochemical cell is a device that can generate ____________________ energy from the chemical reactions occurring in it.
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What is the primary difference between a strong electrolyte and a weak electrolyte?
What is the primary difference between a strong electrolyte and a weak electrolyte?
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Galvanic cells are also known as voltaic cells.
Galvanic cells are also known as voltaic cells.
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Match the type of electrolyte with its characteristic:
Match the type of electrolyte with its characteristic:
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What is the purpose of an electrochemical cell?
What is the purpose of an electrochemical cell?
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What is the primary concern of electrochemistry?
What is the primary concern of electrochemistry?
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A non-electrolyte is a substance whose solution conducts electricity.
A non-electrolyte is a substance whose solution conducts electricity.
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What is the outcome of the reaction between a clean copper wire and a colorless solution of silver nitrate?
What is the outcome of the reaction between a clean copper wire and a colorless solution of silver nitrate?
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The ability of solutions to conduct electrical current depends directly on the number of _______________________ present in the solution.
The ability of solutions to conduct electrical current depends directly on the number of _______________________ present in the solution.
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What is the process of separation of ions from an electrovalent compound by the action of a solvent?
What is the process of separation of ions from an electrovalent compound by the action of a solvent?
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Strong electrolytes are substances that produce relatively few ions when dissolved in water.
Strong electrolytes are substances that produce relatively few ions when dissolved in water.
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Match the following processes with their definitions:
Match the following processes with their definitions:
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What is the percentage of purity of electrically refined copper?
What is the percentage of purity of electrically refined copper?
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Aluminum is extracted from the mineral bauxite through electrolysis.
Aluminum is extracted from the mineral bauxite through electrolysis.
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What is the purpose of adding cryolite in the extraction of aluminum?
What is the purpose of adding cryolite in the extraction of aluminum?
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The electrolysis of aqueous sodium chloride produces three industrially significant products: ___, ___, and ___.
The electrolysis of aqueous sodium chloride produces three industrially significant products: ___, ___, and ___.
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What is the primary factor that affects the service life of a battery?
What is the primary factor that affects the service life of a battery?
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A primary battery is rechargeable.
A primary battery is rechargeable.
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What is the function of the separator in a battery?
What is the function of the separator in a battery?
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Match the following battery types with their characteristics:
Match the following battery types with their characteristics:
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Study Notes
Electrolytes and Non-Electrolytes
- Electrolyte: a substance whose solution conducts electricity
- Non-electrolyte: a substance whose solution does not conduct electricity
- Examples of strong electrolytes: strong acids, strong bases, and soluble salts
- Examples of weak electrolytes: weak acids and weak bases
- Non-electrolytes: compounds other than acids, bases, and salts
Colligative Properties of Solutions
- Effect on freezing point of pure solvents: 1 mol non-electrolyte = 1 mol of any other non-electrolyte, 1 mol strong electrolyte > 1 mol non-electrolyte
- Effect on boiling point of pure solvents: 1 mol electrolyte > 1 mol non-electrolyte
Electrochemical Cells
- Definition: a device that can generate electrical energy from chemical reactions or use electrical energy to facilitate chemical reactions
- Two types of electrochemical cells: electrolytic cell and galvanic cell (or voltaic cell)
- Electrolytic cell: converts electrical energy into chemical energy
- Galvanic cell (or voltaic cell): converts chemical energy into electrical energy
Electrolysis
- Definition: the process of using electrical energy to facilitate chemical reactions
- Applications: extraction of metals (e.g., aluminum), manufacture of other elements and compounds (e.g., chlorine, hydrogen, sodium hydroxide)
Batteries
- Definition: a device that converts chemical energy into electrical energy
- Service life: the number of operating hours during which a battery operates under normal conditions
- Factors affecting service life: quality of battery, temperature during storage, rate of discharge, length of storage time, temperature during discharge, number and duration of on and off periods
- Essential parts of a battery: electrodes, electrolyte, separator, and container
- Classification of batteries: primary (non-rechargeable) and secondary (rechargeable)
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Description
This quiz covers the basics of conductors of electricity, ionization, and dissociation in solutions. It includes examples of strong acids and bases.
