Everything Science Grade 12

3.4 CHAPTER 3. REACTION RATES

Gas Syringe System

Reactants

Gas

Figure 3.2: Gas SyringeMethod

Figure 3.3: At the beginning of the reactionbetween sodium thiosulphate and hy-
drochloric acid, when no precipitate has been formed, the cross at thebottom of the
conical flask can be clearly seen.