Lead(II) bromide is used because it melts at an unusually low temperature for an ionic compound (373 °C). Lead can be fairly safely handled afterwards (taking care to ensure that hands are washed after any contact with the metal). Bromine is a coloured acidic gas with a characteristic smell.
Electrolysis is not possible with solid lead(II) bromide. This is because the ions are held in a three-dimensional lattice, unable to move freely to the electrodes. Melting enables the ions to become mobile and to travel to the respective electrodes.
At the cathode (-) molten lead is formed:
Pb2+(l) + 2e- → Pb(l)
At the anode, gaseous bromine is evolved:
2Br-(l) → Br2(g) + 2e-
because the ions aren't free to move and carry the charge whereas when molten or in solution they are able to flow freely.
Because the ions are not free to move in the solid, so they cannot move to the electrodes to be discharged.
Solid lead bromide is not an electrolyte.
causeit is molten
Calcium bromide is an ionic solid, in the solid state it does not conduct electricity. Solutions do conduct, as does the melt.
Sodium bromide is an ionic substance. It conducts electricity when melted or when dissolved in water. This is due to the sodium, Na+ ions and the Br- ions present. It does not conduct electricity in the solid state as the ions can not move.
Potassium bromide forms an ionic solid
Calcium bromide is a solid at standard temperature and pressure.
No because it's a crystalline ionic solid. However, dissolve some KBr in water and it will conduct electricity nicely, because in solution it's an electrolyte, with lots of little K+ and Br- ions floating around.
Calcium bromide is an ionic solid, in the solid state it does not conduct electricity. Solutions do conduct, as does the melt.
No.
Bromine, as the element is called on its own is a nonmetal, and is a poor conductor of electricity. Bromide salts conduct electricity if dissolved in water or molten, but not in their normal solid states.
Sodium bromide is an ionic substance. It conducts electricity when melted or when dissolved in water. This is due to the sodium, Na+ ions and the Br- ions present. It does not conduct electricity in the solid state as the ions can not move.
Does not, in solid form there are no free ions so can not move towards cathode and anode plates so can not conduct electricity.
Potassium bromide forms an ionic solid
No because it's a crystalline ionic solid. However, dissolve some KBr in water and it will conduct electricity nicely, because in solution it's an electrolyte, with lots of little K+ and Br- ions floating around.
Calcium bromide is a solid at standard temperature and pressure.
yes. it is a solid
no
Sodium bromide is a white, crystalline solid.
At room temperature bromine is a reddish-brown liquid. s