290 DIY Science: Illustrated Guide to Home Chemistry Experiments
RQEWEvI UESTIOnS
q 1 : From looking at the balanced equation and your own observations during this lab, which gas was produced at the anode and
which at the cathode? What evidence supports your conclusions?
q: 2 Using the values you recorded on lines F and G of Table 16-1, calculate the volume ratio of the two gases produced and the
percentage error from the theoretical yield.
q: 3 Comparing your observations for igniting the cathode gas versus igniting the mixed cathode and anode gases, why was the
combustion of the mixed gases so much more vigorous?
q: 4 At standard temperature and pressure, one mole of a gas occupies about 22.4 L. The density of water is 1.00 g/mL and its
formula weight is 18.02 g/mol. If your test tube of mixed anode and cathode gases contains a total of 25.0 mL of gases in a 2:1
hydrogen:oxygen ratio, how much liquid water is produced when they combust?