Electrolysis Test Study Guide QUESTIONS AND ANSWERS

Electrolysis Test Study Guide QUESTIONS
AND ANSWERS

1.​ For an aqueous how does the H₂O (water) cut up up? - ANSWER-H2O --> H⁺, OH⁻
2.​ How do while to apply the electrochemical series? (FOR THIS TEST ONLY) -
ANSWER-(commonly it might be if there are extra than 2 elements in a compound
but for this take a look at)
3.​ When you notice (aq) it manner aqueous answer. Since aqueous answers means
dissolved in water, water is part to problems with (aq).
In an aq equation when you have
OH --> ?? - ANSWER-OH⁻ -e → O2(g) (abrieviated)

Full 4OH- -4e --> 2H2O + O2(g)
In the Electrochemical Series
4.​ For ________ ions (_ions), the higher up the electrochemical collection, the more easily
discharged. For _____ ions (_ions), the decrease down the electrochemical collection,
the extra effectively discharged. - ANSWER-Negative, Positive
KI(L) -->
NaBr(s) -->
LiCl(l) --> - ANSWER-KI(l) --> K(s) + I2(g)
NaBr(s) --> No Reaction
LiCl(l) --> Li(s) + Cl2(g)
5.​ Need to recognize - ANSWER-Electrodes can ONLY discharge 1 ion. Sometimes
there are greater than 1 ion at an electrode. In this case, the electrode discharges
the ion this is more conveniently discharged.
For negative ions (-ions), the better up the electrochemical collection, the more
without problems discharged. For fantastic ions (+ions), the decrease down the
electrochemical series, the extra conveniently discharged.
6.​ Show the stairs for this equation
MgCl2 --> - ANSWER-Go to http://trevor.Mrooms.Org/mod/web page/view.Personal
home page?Identification=32401 to check the solution!
7.​ Show the stairs for this problem
CuCl2(aq) --> Cu(s) + O2(g) - ANSWER-To take a look at you solution go to
http://trevor.Mrooms.Org/mod/page/view.Hypertext Preprocessor?Identity=32401
8.​ What are the 8 uses of electrolysis? - ANSWER-Purification of metals
Electroplating
Chlorine production
Extraction of Hydrogen from water
Extraction of oxygen from water
Extraction of Reactive metals
Hair elimination