Electrochemical cells
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Kholoud Amer
Used 11+ times
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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the ratio of moles formed at each cathode (negative electrode)?
A
B
C
D
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which factor affect the amount of product formed at the cathode during electrolysis of molten salt?
I. current
II. time
III. charge on the cation
A. I and II
B. I and III only
C. II and III only
I,II and III
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What are the products when concentrated KBr (aq) is electrolyzed?
A
B
C
D
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which is correct for a redox reaction where the standard electrode potential is negative?
∆Gꝋ =-nFEꝋ and ∆Gꝋ = -RTln K
∆Gꝋ is negative and K is less than 1
∆Gꝋ is negative and K is greater than 1
∆Gꝋ is positive and K is less than 1
∆Gꝋ is positive and K is greater than 1
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What are the products of electrolysis when concentrated calcium bromide solution is electrolysed using graphite electrodes?
A
B
C
D
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which combination would electroplate an object with copper?
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In the electrolysis of aqueous potassium nitrate, KNO3, using inert electrodes, 0.1 mol of a gas was formed at the cathode (negative electrode).
Which is correct?
A
B
C
D
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