Posted by Jack on .
Which of the following metals is oxidized by calcium ions?
The first electrochemical cell was invented by ____.
Why can't a lead storage battery be recharged indefinitely?
A direct current must pass through the cells.
The electrodes lose lead sulfate.
*It is difficult to reverse the direction of current flow.
The electrolyte is too expensive.
Which electrode (anode or cathode) is designated as positive in an electrolytic cell?
What is the direction of electron flow in an electrolytic cell?
from cathode to anode
*from anode to cathode
in either direction
There is no flow.
What electrolyte can be used to electrolyze water?
hydrochloric acid only
sodium chloride only
sodium hydroxide only
*any electrolyte that is not easily reduced or oxidized
The gas produced at the cathode in the electrolysis of brine is ____.
In electroplating, the object to be electroplated is placed _____.
*at the anode
at the cathode
at either the anode or the cathode
in between the anode and the cathode
I think you have some serious work to do. I disagree with 8,7, 5, 4, & 3.
you are right I think #3 is B...#4 is A and #5 is A...haven't done 7 and 8 yet...how am I doing?
#8 -B...is that better?
I believe those are ok. I HOPE you were not confused by which of the opposite answer pairs to choose, you guessed, you guessed wrong the first time, and when I pointed them out you just chose the other one. As I say, I HOPE that isn't happening.
THESE ARE MOSTLY WRONG DO NOT USE BIG WRONG ANSWERS ME FAIL TEST :((((((((((((((
Dang it i failed. Why did you post this? YOUTE NOT HELPING ANYONE
^^ these are all correct, just took the quiz!
Lana Del Rey,
These are correct btw
unknown answers are correct.
Unknown is completely correct, i got 100. Thank you!
I just got a 100! unknown is correct! Thanks man!