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 Chemistry: Effect of an Electric Current on Substances questions and answers

Study the set –up below and answer questions that follow.
figelectriccurrent24820201539.JPG
State and explain the observations that would be made when the circuit is completed.

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Answer Text:
-When circuit is completed the bulb lights. A brown substance is formed at the anode, while a grey substance is formed at the cathode. Because #PbBr_2# acts as an electrolyte hence free or mobile ions, lead ions gains electrons to form Pb( lead) and Br-ions lose electrons to form #Br_2# (Bromine).


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