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CH.6: ELECTROCHEMISTRY

CH.6: ELECTROCHEMISTRY. Electrolytes & Non-Electrolytes. 4S1 30 June 2011, Thursday 11.55 am – 1.05 pm. Electrolytes. Electrolytes = substances that can be conduct electricity either in molten state or in aqueous solution & undergo chemical changes.

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CH.6: ELECTROCHEMISTRY

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  1. CH.6: ELECTROCHEMISTRY Electrolytes & Non-Electrolytes 4S1 30 June 2011, Thursday 11.55 am – 1.05 pm

  2. Electrolytes

  3. Electrolytes = substances that can be conduct electricity either in molten state orin aqueous solution & undergo chemical changes

  4. Non-electrolytes = substances that cannot conduct electricity either in molten state or in aqueous solution

  5. Example of electrolytes: • acids: HCl, HNO3 • alkalis: NaOH, KOH • salt solution: NaCl(aq.) • molten salts: PbBr2 • *ionic substances

  6. Ionic compounds cannot conduct electricity in solid state because the ions are held in a lattice & do not move freely

  7. Ionic compounds can conduct electricity in molten state or aqueous sol. because the ions are free to move around

  8. Answers for previous worksheet*

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