ch.6: electrochemistry
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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. - PowerPoint PPT Presentation
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4S130 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
Non-electrolytes = substances that cannot
conduct electricity either in molten state or in aqueous solution
Example of electrolytes:• acids: HCl, HNO3
• alkalis: NaOH, KOH• salt solution: NaCl(aq.)• molten salts: PbBr2
*ionic substances
Ionic compounds cannot conduct
electricity in solid state because the ions are held in a lattice & do
not move freely
Ionic compounds can conduct electricity in
molten state or aqueous sol. because
the ions are free to move around
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