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Classify each of the following substances and descriptions as an electrolyte or a nonelectrolyte. Note: If any part of this question is answered incorrectly, a single red X will appear indicating that one or more substances have been placed incorrectly.
-most molecular solutes
-sodium chloride, NaCl
-potassium iodine, KI
-table sugar
-methanol, CH3OH
-sodium hydroxide, NaOH
-a substance that forms an aqueous solution that does not conduct electricity
-a soluble ionic compound
Electrolytes are substances that create Ions in an aqueous solution. Strong electrolytes are those that dissociate completely, such as strong bases, strong acids and salts whereas weak electrolytes are those which dissociate partially, like strong bases and weak acids. However, nonelectrolytes are those that don’t dissociate in water.
Based on their behavior in solution, substances are divided into electrolytes or non-electrolytes.
The substances that are dissociated in water and conduct electricity are called electrolytes.
Non-electrolytes refer to substances that do not dissociate in solution.
[katex]\left( {{\rm{NaCl}}} \right)[/katex] is one of the compounds that have an ionic bond.
Methanol [katex]\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{OH}}} \right)[/katex] and Table sugar are the compounds that have covalent bonds.
The molecular molecular solute most commonly is the compound with molecular bonds.
“A substance that forms an aqueous solution but does not conduct electricity” can be either covalently or molecular.
Ans: The nature of substances can be assigned by:
Most molecular solutes: non-electrolyte
Sodium chloride, NaCl: electrolyte
Potassium iodine, [katex]{\rm{KI}}[/katex]: electrolyte
Non-electrolyte : table sugar
Methanol, [katex]{\rm{C}}{{\rm{H}}_{\rm{3}}}{\rm{OH}}[/katex]: non-electrolyte
Sodium hydroxide, NaOH: electrolyte
Non-electrolyte is a substance that forms an aqueous solution but does not conduct electricity.
Electrolyte is a soluble ionic compound.