Single Displacement Reactions

Question 1

Single Displacement

Answer 1

• An element displaces another element in a compound, leading to a new element and new compound as the product
• A metal and a ionic compound or acid
• Cation in compound gets displaced

Question 2

Activity series

Answer 2

• To know if a reaction will occur, you will need to know the position of the metals in the activity series
• If the element metal is more reactive than the compound metal, the reaction will occur (can remove the compound)
• If the element metal is less reactive than the compound metal, the reaction will not occur (tighter hold)

Question 3

The Halogen Activity Series

Answer 3

• Only for single displacement
• Used when the non metal is displacing an anion in compound
• Halogens have their own reactivity, and reactivity goes down halogen group

Question 4

Writing Single displacement problem

Answer 4

• Must include state symbols
• Must consider charges of elements and if they are diatomic
• Iodine is a solid and bromine is a liquid (rest halogens is gas)

Question 5

Metal + aqueous ionic compound

Answer 5

On activity series, the metal must be above cation

Question 6

Metal + acid

Answer 6

On activity series, the metal must be above hydrogen

Question 7

Metal + water

Answer 7

• Water must be treated as H(OH) and metal displaces with H
• Metal must be one of the first five on activity series
• Ca + H2O → CaOH (aq) + H2 (g)

Question 8

Halogen + aqueous ionic compound containing halide

Answer 8

Halogen must be above the halogen in compound