I answered EVERY single question on my homework (all 14 of them) and I've been trying to do this one question for 4 days!!! Please help me!!!!
Here's the evil question...:
You notice that there are deposits of calcium carbonate (a hard white-colored substance) along the inside walls of the swimming pool. What do you think caused this? Describe in detail, including the reaction type (if any), and what the calcium carbonate is called.
Thank you!! Thank you!!
2007-04-25 10:56:38 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
I really need to know the explanation and the formula for this.
I tried looking it up everywhere:
ask.com
google.com
yahoo.com
dogpiles.com
my textbook
my brother's textbook
everywhere....<=( help!
2007-04-25 11:05:53 · update #1
The calcium carbonate is called soap scum, its normally soluble in water, but soap (which is on your skin as a residue) contains sodium ions which through fancy chemistry cause the calcuim carbonate to precipitate out.
The reaction is (the Na(+) over the arrow indicates that this reaction takes place in the prescence of sodium ions):
...............Na(+)
CaCO3(aq)-->CaCO3(s)
2007-04-25 11:09:48 · answer #1 · answered by Scooter_MacGyver 3 · 0⤊ 0⤋
Lime-scale, caused by the decomposition of temporarily hard water.
Lots of phrases there for you to look up!
2007-04-25 11:02:18 · answer #2 · answered by Gervald F 7 · 0⤊ 0⤋