1) Tap water contains dissolved oxygen gas, O2(aq). Adding heat to tap water causes the dissolved oxygen to leave. Which of the two equations below represents a chemical reaction, and which does not? Defend your answer.
(a) 2 H2O2(l) →2 H2O(l) + O2(g)
(b) H2O(l) + O2(aq)
Heat
H2O(l) + O2(g)
2) Which of the following are redox reactions?
(a) 2 Na + 2 H2O →2 NaOH+ H2
(b) MgBr2 + 2 NaF→MgF2 + 2 NaBr
(c) 2 CO + O2 →2 CO2
(d) SO2 + H2O →H2SO3