write word equations for the following reactions. when electricity is passed through sodium chloride,sodium and choride are produce.
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You get different products
if the sodium chloride is dissolved in water.
Sodium chloride must be heated until it is molten
before it will conduct electricity. Electrolysis
separates the molten ionic compound into its elements
2Na+ + 2e- arrow 2Na (sodium metal at the (-)cathode).
2Cl- - 2e- arrow Cl2 (chlorine gas at the (+)anode).
Sodium ions gain electrons (reduction) to form sodium atoms.
Chloride ions lose electrons (oxidation) to form chlorine atoms.
The chlorine atoms combine to form molecules of chlorine gas.
The overall reaction is
2Na+Cl-(l) arrow 2Na(s) + Cl2(g)
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