halogens

• Group 7 displacement reactions, also known as halogen displacement reactions, involve an element being kicked out of a compound it's in by a more reactive element.
• The key parts of a displacement reaction are that something's being kicked out and something else will take its place.
• The element doing the displacing must be more reactive than the element being displaced.
• Group 7 elements, which include fluorine, chlorine, bromine, and iodine, have different reactivities, with fluorine being the most reactive and iodine being the least reactive.
• The other product formed when potassium bromide and chlorine react is potassium chloride and bromine.
• Chlorine, being more reactive, will displace the bromide from the compound, resulting in potassium chloride plus bromine.
• Between potassium iodide and bromine, bromine is more reactive and will displace the iodide, resulting in potassium bromide and iodine bromide.
• Fluorine, being more reactive, will displace the bromide from the compound, resulting in sodium fluoride and bromine.
• When chlorine and potassium iodide react, they produce potassium chloride and one other product.
• A more reactive halogen can displace a less reactive halogen, but a less reactive one wouldn't be able to displace a more reactive one.
• To determine whether a displacement reaction can occur, it's important to decide if the one of the halogens is more reactive than another.
• Fluorine is more reactive than chlorine, so it can displace chlorine.
• Chlorine can displace bromine or iodine because it's more reactive than them, but it couldn't displace fluorine.
• Bromine can only displace iodine, not the others because it's less reactive than them.
• Iodine, being the least reactive, can't displace any of the other halogens.
• To displace iodine, a more reactive element is needed.
• The fluoride in sodium fluoride will be colorless, but the bromine because it's on its own, will appear brown.
• The products are going to appear gray, so the color change overall is from yellow to gray.
• The group 7 element that was present in the compound can cause the products to change from green to gray.
• Potassium iodide, because it's a compound, will be colorless.
• In the last reaction, the green color at the beginning is coming from the chlorine on its own, which is going gray, so the group 7 element causing the gray color is iodine.
• The fluoride in potassium fluoride will be colorless, but the iodine will appear gray as normal.
• Chlorine, when added to a solution of a compound of another group seven element, can cause the color to change from green to gray.
• The reactants overall will look yellow.
• Sodium bromide, because the bromine is part of a compound, will be colorless.
• Sodium bromide and chlorine are both green, so the color change in this reaction is from green to brown.
• Sodium bromide plus fluorine produces sodium fluoride plus bromine.
• The colors of the different compounds and elements need to be considered when identifying the color change in a reaction.
• The products are going to appear brown or orange, so the color change overall is from yellow to brown.
• Fluorine, because it's on its own, will appear its normal yellow color.
• Fluorine can displace chlorine because it is more reactive than chlorine.
• Fluorine is more reactive than bromine, so it can displace bromine.
• Chlorine can displace fluorine because it is more reactive than fluorine.
• Fluorine is more reactive than chlorine, so it can displace chlorine.
• Iodine can be displaced by bromine because bromine is more reactive than iodine.
• Iodine is less reactive than chlorine, so chlorine can displace iodine.
• Chlorine can displace iodine because it is more reactive than iodine.
• Chlorine can displace iodine