Illustrated Guide to Home Chemistry Experiments

Chapter 16 Laboratory: Electrochemistry 289

FIGURE 16-1: A homemade version of a
commercial Brownlee electrolysis setup

dISoALp S : The waste solutions from this lab can be

flushed down the drain with plenty of water.

22.

TABLE 16-1: Produce hydrogen and oxygen by electrolysis of water—observed and calculated data

Item Result

A. Glowing match + anode gas

B. Burning match + cathode gas

C. Volume of solution remaining in anode tube ______.______ mL

D. Volume of solution remaining in cathode tube ______.______ mL

E. Volume of test tube ______.______ mL

F. Volume of anode gas (E – C) ______.______ mL

G. Volume of cathode gas (E – D) ______.______ mL

H. Burning match + mixed anode and cathode gases

Light a match, remove the stopper from one of the

tubes, and hold the lit match just over the mouth of the

tube. Record your observations on line H of Table 16-1.