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