REFERENCE SECTION: TESTS for GASES
Complete the Table below, which summarizes tests for ten common gases,
by inserting the correct observation from this list: bleaches; blue; 
brown; dark-blue; decolourizes; green; milky-white; pink; 'pop'; red; 
relights; white.

*  Liquid and solid alkenes are immiscible with bromine water and with
alkaline potassium manganate(VII); accordingly, they require warming or 
shaking. Note that alkanes also react with bromine: but such reactions 
are very slow indeed - particularly in the absence of light - so the
orange-brown colour of bromine water usually remains.

REFERENCE SECTION: LABORATORY PREPARATIONS of GASES
Complete the Table below, which summarizes the laboratory preparations
of six common gases, by completing the balanced symbol equations.

* Each preparation is routinely executed, in a well-ventilated fume
cupboard, wearing safety glasses. Most gases can be dried by passage 
through calcium chloride, silica gel, or concentrated sulfuric acid; 
however, the corrosive nature of the latter drying agent introduces a 
unnecessary safety hazard.

Dr. R. Peters                   Next                   Contents' List