Question detail
Describe why ionic compounds must be molten or dissolved in water for electrolysis to occur.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Electrolysis
Question
Describe why ionic compounds must be molten or dissolved in water for electrolysis to occur.
Answer
Ionic compounds must be molten or dissolved in water to allow the ions to move freely. In solid form, the ions are held in a fixed position within the lattice structure and cannot conduct electricity.
Explanation
This answer effectively explains the necessity of ionic mobility for electrolysis, testing the student's understanding of the physical state of ionic compounds and their electrical conductivity.
Common mistake
Misunderstanding Ion Movement
Students often confuse the movement of ions during electrolysis, thinking that positive ions move to the anode instead of the cathode.
Remember that positive ions are attracted to the negative electrode (cathode) where they gain electrons, while negative ions move to the positive electrode (anode) to lose electrons.
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