Which of the following is the best starting material for the preparation of oxygen? Heating of trioxonitrate (v) with? by Sunday | Jan 2 | Chemistry WAEC | 0 comments A. Pb B. Zn C. Ca D. Na Correct Answer: Option A A. Pb Users Also Read These:Describe the laboratory preparation of dry oxygen…On heating, which of the following compounds will…In the preparation of oxygen by heating KClO3 in the…2H2 + O2 → 2H2O: From this equation; calculate the…What volume of oxygen will remain after reacting 8cm…