Exchange/percipitation Reactions

Question 0

Solubility rules

Answer 0

Nitrates, NO3- : all SOLUBLE

Chlorides, Cl- : all SOLUBLE exp Ag, Pb

Surfaces, SO4 2- : all SOLUBLE exp Ba, Pb, Ca

Hydroxides, OH- : all INSOLUBLE exp k, NA

Carbonates, CO3 2- : all INSOLUBLE exp K, Na

All group 1 : SOLUBLE

Question 1

What is a exchange/percipitation reaction?

Answer 1

When two solutions of ionic compounds are mixed together and an insoluble solid (precipitate) forms

Question 2

Hint of exchange/ precipitation reactions in formulae

Answer 2

Swapping partners

Question 3

How to write a formulae for exchange and precipitate reactions

Answer 3

Always add an ‘s’ on the precipitate

Question 4

Example of a exchange/ precipitation reaction

Answer 4

[reaction] this is a exchange/precipitation reaction
[observation] when the (colour) (soln) solution is added to a (colour) (soln) a (colour) precipitate forms
[word and balanced formula equation and ‘s’ scripture]
[chemistry and links] the (colour) (soln) contains (colour) (ion) ions and (colour) (ion) ions. the (colour) (soln) contains (colour) (ion) ions and (colour) (ion) ions. When they are mixed, all four types of ions come together. According to the solubility rules, (insoluble) is insoluble, therefore the (insoluble soln) ions react and form a (colour) precipitate of (formula of precipitate). The left over ions remain in solution and do not react and become spectator ions