5 Steps to a 5 AP Chemistry
Entering these values into the Kdexpression gives: (0.013)(0.052)^4 /(0.087) =1.1 × 10 −^6. Give yourself 1 point for this answe ...
Le Cha^telier’s principle says that if an equilibrium system is stressed, it will reestablish equilibrium by shifting the reac ...
An acid–base indicator is used in a titration and changes color in the presence of an acid or base. The equivalence point or ...
241 Electrochemistry IN THIS CHAPTER: Summary:Electrochemistryis the study of chemical reactions that produce electricity, and ...
Redox Reactions Electrochemical reactions involve redox reactions. In the chapter on Reactions and Periodicity we discussed redo ...
are flowing through the wire they can do useful work, like powering a calculator or a pace- maker. Electrochemical cellsuse indi ...
which can do work. If a voltmeter was connected to the wire connecting the two electrodes, a current of 1.10 V would be measured ...
Cell Potential In the discussion of the Daniell cell we indicated that this cell produces 1.10 volts. This voltage is really the ...
246 Step 4. Review the Knowledge You Need to Score High Table 16.1 Standard Reduction Potentials in Aqueous Solution at 25°C H ...
First, the cell voltage can be calculated using: Since the cell potential must be positive (a galvanic cell), there is only one ...
For example, if liquid titanium(IV) chloride (acidified with HCl) is electrolyzed by a current of 1.000 amp for 2.000 h, how man ...
If the redox reaction is at equilibrium, E°=0, the equilibrium constant may be calcu- lated by: Let’s apply these relationships. ...
and then apply the Nernst equation. If Ecellturns out to be negative, it indicates that the reaction is not a spontaneous one (a ...
5.When diagramming an electrochemical cell, be sure the electrons go from anode to cathode. 6.Be sure that for a galvanic cell, ...
9.Cr 2 O 72 −+14 H++3 S^2 −→2 Cr^3 ++3 S +7 H 2 O For the above reaction, pick the true statement from the following. (A) The S^ ...
17.An electrolysis cell was constructed with two platinum electrodes in a 1.00 M aqueous solu- tion of KCl. An odorless gas evol ...
C—The balanced equation is: C—It takes 4 mol of electrons (4 F) to change the platinum ions to platinum metal. The calculation ...
Free-Response Questions First Free-Response Question Answer the following question in 15 minutes. You may not use a calculator ...
The above galvanic cell is constructed with a cadmium electrode in a 1.0 M Cd(NO 3 ) 2 solution in the left compartment, and a s ...
b. The cobalt is the anode. You get 1 point for this statement. The reason Co is the anode is because the Co is oxidized. You ge ...
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