☣
Chem P5
Solubility with temperature
increasing/ decreasing curve without touching intercepts.
Planning -
at least 5 experiments.
range of at least 40C
choose amounts of materials, Mass by balance.
stirs
heat mixture to dissolve all the solute.
cool and measure the temperature at which first crystals
appear.
Solubility and concentration
linear increasing/ decreasing curve with no x intercept, only y.
when increasing conc, be mindful about the solution becoming saturated.
% composition
hyroxide to oxide - heat to constant mass
measure mass after filtering, wash and drying
finding accurate mass is hard as mass of x may be too small
Thermal Decomposition
Planning-
mass of each carbonate used must contain the same number of moles using
n=m/Mr
collect gas using gas syringe (vol < max capacity)
Having the same settings on the Bunsen
Bunsen at the same distance from the reaction vessel.
Improvement-
Chem P5 1
Chem P5
Solubility with temperature
increasing/ decreasing curve without touching intercepts.
Planning -
at least 5 experiments.
range of at least 40C
choose amounts of materials, Mass by balance.
stirs
heat mixture to dissolve all the solute.
cool and measure the temperature at which first crystals
appear.
Solubility and concentration
linear increasing/ decreasing curve with no x intercept, only y.
when increasing conc, be mindful about the solution becoming saturated.
% composition
hyroxide to oxide - heat to constant mass
measure mass after filtering, wash and drying
finding accurate mass is hard as mass of x may be too small
Thermal Decomposition
Planning-
mass of each carbonate used must contain the same number of moles using
n=m/Mr
collect gas using gas syringe (vol < max capacity)
Having the same settings on the Bunsen
Bunsen at the same distance from the reaction vessel.
Improvement-
Chem P5 1
