Multiple Choice
What happens to the electrical conductivity of pure water when an acid is dissolved in it?
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6. Chemical Quantities & Aqueous Reactions
Electrolytes
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Under which condition do ionic compounds conduct electricity?
A
When in solid crystalline form
B
Only when mixed with nonpolar solvents
C
Only at room temperature in solid state
D
When dissolved in water or melted
Verified step by step guidance1
Understand that ionic compounds consist of positive and negative ions held together in a solid lattice structure.
Recognize that in the solid crystalline form, these ions are fixed in place and cannot move freely, so the compound does not conduct electricity.
Know that for ionic compounds to conduct electricity, their ions must be free to move; this happens when the compound is melted (liquid state) or dissolved in water (aqueous solution).
Recall that nonpolar solvents do not dissolve ionic compounds well, so ionic compounds do not conduct electricity in such solvents.
Conclude that the condition for ionic compounds to conduct electricity is when they are either melted or dissolved in water, allowing ions to move and carry charge.
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