When making an ester, conc sulphuric acid acts as a .
When reacting iodine with starch solution, the solution will go from ❌ to ❌.
When selecting which filter is complementary during colorimetry, you should use the filter that gives the ❌ absorbance reading.
Heating under reflux means the mixture and allowing it to and fall back into the flask.
Carbonates with a ❌ charge density will be less thermally stable becasue they will distort the large carbonate ion ❌.
Weighing ou a larger sample will be more accurate than a smaller one becuase there is a smaller .
