September 30, 2011

General Chemistry (Part 7): Faraday's Laws

For XII level students:
The following questions apply Faraday's laws. You can try doing the questions to check how well you've been in this part. Don't forget to prepare yourselves for 3rd monthly exam. Good luck!


1. Potassium chlorate can be made of potassium chloride based on the following equation:
KCl (aq) + 3 H2O (l) → KClO3 (aq) + 3 H2 (g)
How much electric charge will be consumed to form 1 moles of potassium chlorate?
A. 2 Farad
B. 3 Farad
C. 4 Farad
D. 5 Farad
E. 6 Farad

2. Aqueous copper (II) nitrate is electrolyzed by platinum electrodes and found 12.7 grams of precipitation. What volume of a gas around anode will be produced at STP? (Ar Cu = 63.5)
A. 1.12 liters
B. 2.24 liters
C. 3.36 liters
D. 4.48 liters
E. 5.60 liters

3. Amount of electric charge could precipitate 2.7 grams of aluminum (Ar = 27) from its solution. When the same charge of electric is used for an acidic solution, how much hydrogen gas will be produced at 1 atm and 273K?
A. 2.24 liters
B. 3.36 liters
C. 4.48 liters
D. 5.60 liters
E. 6.72 liters

4. What Farad will be needed to reduce 60 grams of calcium ions to metallic substance? (Ar Ca = 40)
A. 1 Farad
B. 1.5 Farad
C. 2 Farad
D. 3 Farad
E. 4 Farad

5. Diluted silver nitrate is electrolyzed by 2 Amperes of electrolytic current for 10 minutes. What mass of silver will be precipitated on cathode? (Ar Ag = 108, 1 F = 96,500)
A. (96,500 x 20) grams
B. (96,500 x 108 x 20) grams
C. (96,500 x 108 x 200) grams
D. [(108 / 96,500) x 20] grams
E. [(108 / 96,500) x 1,200] grams

6. Equal amount of electricity is flown into two electrolytic cells. The first cell uses carbon and zinc as electrodes in aqueous zinc sulfate while the second cell uses carbon and tin as electrodes in aqueous tin (II) chloride. If found that 13 grams of zinc is precipitated in the first cell, how many grams of tin would be found? (Ar Zn = 65, Sn = 119)
A. 0.9 grams
B. 11.9 grams
C. 18.3 grams
D. 71.0 grams
E. 595 grams

7. An electric current was flown into an electrolytic cell which contains silver ions (Ar Ag = 108) and in time period it precipitates 0.54 grams of silver on cathode. If equal electric current was flown in another solution which contains M2+ (Ar M = 40), what mass of M would be precipitated on cathode?
A. 0.54 grams
B. 0.40 grams
C. 0.27 grams
D. 0.20 grams
E. 0.10 grams

8. In an electrolytic process where used the diluted sulfuric acid, produced 2.24 dm3 of hydrogen gas at STP. If equal amount of electric current is flown for aqueous silver nitrate (Ar Ag = 108), how many grams of silver will be formed on cathode?
A. 2.7 grams
B. 5.4 grams
C. 10.8 grams
D. 21.6 grams
E. 43.2 grams

Labels: , ,

21 Comments:

Blogger Kartika Rahma Yuliarti said...

Name : Kartika rahma yuliarti
class : XII IA 2

3. B 3,36 liters

September 15, 2010  
Anonymous Anonymous said...

Name : Mika Cendy Permatasari
Class : XII PSIA 2

4. D. 3 Farad

September 16, 2010  
Anonymous Anonymous said...

Name : Serli Nurmala Sari
Class : XII PSIA 2

7. E.0.10 grams

September 16, 2010  
Anonymous Anonymous said...

Name :ulfiah cahya a.p
class :XII PSIA 2


2)B.2.24 liters

September 16, 2010  
Anonymous Anonymous said...

Name : Sendy Inka Casella
Class : XII PSIA 3

4. D. 3 Farad

September 17, 2010  
Anonymous Anonymous said...

Name : Feranika
Class : XII PSIA 3

5. E. [(108 / 96,500) x 1,200] grams

September 17, 2010  
Blogger MWEC .ewis said...

Name : Maulia Wisda Era Chresia
Class : XII PSIA 2

8. D. 21.6 grams

September 17, 2010  
Blogger R.A.DelilaTs said...

This comment has been removed by the author.

September 18, 2010  
Blogger catatan harian sii noon :) said...

Name : Annisa Rahayu
Class : XII PSIA 2

6. B.11,9 grams

September 18, 2010  
Blogger R.A.DelilaTs said...

Name: R. A. Delila Tsaniyah
Class: XII PSIA 2

1. C. 4 Farad

September 18, 2010  
Anonymous Anonymous said...

name : Ria Rizky Carlita
class : xii psia 2

5. E. [(108/96,500)x1,200] grams

September 19, 2010  
Anonymous Anonymous said...

Name :Muzamil Jariski
class :XII PSIA 2


2 B. 2.24 liters

September 19, 2010  
Anonymous Anonymous said...

Name : Widia Pinasthika
Class : XII PSIA 2

6. B.11,9 grams

September 19, 2010  
Anonymous Anonymous said...

Name : Mutia Muchlisah
Class : XI PSIA 3

8. D. 21.6 grams

September 19, 2010  
Anonymous no limit adventre said...

kunjungan sob :)
salam sukses selalu :)

March 21, 2012  
Blogger Sj said...

nice blog...greeting..still wait for your updating post :) Batu Akik dan Batu Mustika

June 23, 2012  
Anonymous Anonymous said...

Mam, ngeblog disini lagi dong kapan2. Kangen sama cerita english Mam. :)

-fromyourbelovedexstudent

June 24, 2012  
Anonymous Anonymous said...

This comment has been removed by a blog administrator.

September 24, 2012  
Anonymous Anonymous said...

This comment has been removed by a blog administrator.

September 25, 2012  
Anonymous Anonymous said...

Khairunnisah
Putri andriansari
Rabi'ah Dea Ihsaniah

XII PSIA 6
we want to go http://blogwyd.blogspot.com/2010/09/for-xii-level-students-following.html

October 12, 2012  
Anonymous Anonymous said...

anisah nusalina , nurindah yunita sari
XII PSIA 6

we are going to http://blogwyd.blogspot.com/2010/09/for-xii-level-students-following.html

October 12, 2012  

Post a Comment

Subscribe to Post Comments [Atom]

Links to this post:

Create a Link

<< Home