Question

You want to perform an experiment to study a double displacement reaction in your school laboratory.name to aqueous solutions required for this experiment.state the colour change you are likely to observe on mixing the two solutions.

Answer 1

cuso4+mgcl2 gives cucl2+mg2so4

Answer 2

•Pb(NO3)2+2KI ------------->PbI+2KNO3
PbI is yellow ppt
•Na2SO4+BaCl2 -------------->BaSO4+2NaCl
BaSO4is white ppt