Posted by Jack on Thursday, March 28, 2013 at 12:28pm.
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
- Chemistry - DrBob222, Thursday, March 28, 2013 at 12:44pm
I think you have some serious work to do. I disagree with 8,7, 5, 4, & 3.
- Chemistry - Jack, Thursday, March 28, 2013 at 1:30pm
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?
- Chemistry - Jack, Thursday, March 28, 2013 at 1:33pm
#8 -B...is that better?
- Chemistry - DrBob222, Thursday, March 28, 2013 at 5:55pm
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.
- Chemistry - gen, Friday, April 5, 2013 at 4:38pm
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