Fortress of Wonders
Hey there, welcome to the forum! Feel free to login!
Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Can I Use Gameshark On A PSX Emulator?
Fri May 10, 2013 7:28 pm by Link ATK

» Kingdom Hearts 358/2 Days - Action Replay (U) Codes
Thu Mar 14, 2013 9:02 am by UnderNetKing

» [NDS] The Legend of Zelda: Phantom Hourglass (U) - Action Replay Codes
Sun Nov 11, 2012 11:37 pm by Amy

» Honors English 3 - My Answers
Sat Aug 25, 2012 7:25 pm by Link ATK

» [N64] - Ocarina of Time Highly Coveted Codes
Thu Jul 12, 2012 4:31 pm by Link ATK

» Courtney putting her leg behind her head xD
Tue Jun 12, 2012 11:26 pm by Link ATK

» Guild Wars 2 - The BWE
Fri Jun 08, 2012 11:38 am by Link ATK

» Nintendo DS - Discussion Thread
Wed Jun 06, 2012 11:24 am by Link ATK

» Honors Physics Summer Assignment - How To + Answers
Wed Jun 06, 2012 9:30 am by Link ATK

November 2017
MonTueWedThuFriSatSun
  12345
6789101112
13141516171819
20212223242526
27282930   

Calendar Calendar

Top posting users this week

Top posting users this month


Chemistry PostLab Answers [1/11/12] *Read Description*

View previous topic View next topic Go down

Chemistry PostLab Answers [1/11/12] *Read Description*

Post by Amy on Wed Jan 11, 2012 11:05 pm

What you see is what you get. I will not, under any circumstances
save a few, help you out with anything beyond what I have written here. I
didn't have to aid in the creation of this site. I didn't have to put
hard time into posting this (especially when I've other things I could
be and *need to* be doing). Be grateful, or you'll be IP banned [yes, I
can do so because I have Admin rights. IP ban means you cannot access
the site no matter what you do unless you obtain an entirely new ISP,
and even then I can track you!]

-----If you've read the description, then you know what I *would've* said here!
-------
Remember, the goal of question 1 is to write the equations and BALANCE them, definition of stoichiometric equation*. Just as well as you have to balance, you also have to get the states and colors, not to mention the reaction type!

[ (s) means solid, (l) means...oh, wait, this stuff is in your notes!]
Correct numbers will be bolded. Everything else is up to you to decipher unless you decide otherwise (or are a very special friend)!
-------
1) Reaction 1:
Cu(s) + 4HNO3(aq) ---> Cu(NO3)2(aq) + 2NO2 (g) + 2H2O (l)

Cu, Copper is obviously brown. HNO3, nitric acid from what I recall, is clear. Copper Nitrate is blue, nitrogen dioxide as seen under the fume hood is brown, then water is clear again.
Combustion

Reaction 2:
Cu(NO3)2(aq) + 2NaOH(aq) ---> Cu(OH)2(s) + 2NaNO3(aq)

blue clear blue clear
Double Replacement

Reaction 3:
NaOH(aq) + HNO3(aq) ---> NaNO3(aq) + H2O(l)

clear clear clear clear
Double Replacement

Reaction 4:
Cu(OH)2(s) ---> CuO(s) + H2O(l)

blue blue clear
Decomposition

Reaction 5:
CuO(s) + 2HCl (aq) ---> CuCl2 (aq) + H2O (l)

blue clear blue clear
Double Replacement

Reaction 6:
3CuCl3 (aq) + 2Na3PO4 (aq) ---> Cu3(PO4)2 (s) + 6NaCl(aq)
blue clear blue clear
Double Replacement

Reaction 7:
NaOH (aq) + HCl (aq) ---> NaCl (aq) + H2O (l)
clear clear clear clear
Combustion

Reaction 8:
Cu3(PO4)2 (s) + 3H2SO4 ---> 3CuSO4(aq) + 2H3PO4 (aq)
blue clear blue clear
Double Replacement

Reaction 9:
Zn (s) + CuSO4(aq) ---> ZnSO4(aq) + Cu (s)
silver blue clear redbrown
Single Replacement

Reaction 10:
Zn (s) + H2SO4 (aq) ---> ZnSO4(aq) + H2(g)
black clear clear clear
Single Replacement

Q2) The maximum temperature is
Q3) If the copper is overheated, copper oxide will form thus increasing the percent recovery beyond the "actual" recovery percentage.
Q4) The reclaimed copper looks alike that of brown speakles. If the copper was beaten (melded) more into it's original wire-like shape, perhaps it'd look more like the original copper.
Q5) [varies per group; team ANGCNM got 163.4 percent due to copper oxidation]
Q6) [varies per group; copper gained was .317 for team ANGCNM]
Q7) If you spilled some of the copper-containing chemicals (e.g CuSO4), or if you incorrectly proceed with the decantation process(es), you can risk the loss of some reclaimed copper.
Q8) If you overheat the copper in step 41, or if you do not sufficiently wipe the evaporation dish down in step 42, you could possibly gain some more mass.

---------
*Thank you so much, and you know who you are, for telling me that good piece of information!

_________________
avatar
Amy
Super Moderator
Super Moderator

Reputation : 1
Location : Somewhere within a Biosphere

Character Profile
Profession: Tutorial Writer Tutorial Writer

View user profile

Back to top Go down

Re: Chemistry PostLab Answers [1/11/12] *Read Description*

Post by Amy on Thu Jan 12, 2012 7:23 pm

Finished adding them, didn't take as long as I expected.

_________________
avatar
Amy
Super Moderator
Super Moderator

Reputation : 1
Location : Somewhere within a Biosphere

Character Profile
Profession: Tutorial Writer Tutorial Writer

View user profile

Back to top Go down

Re: Chemistry PostLab Answers [1/11/12] *Read Description*

Post by Link ATK on Fri Jan 13, 2012 6:07 pm

I'm going to quit posting answers publicly as you guys obviously do NOT know how to keep a secret. This isn't here for freebies, it's here for you to learn. Dang.

_________________
avatar
Link ATK
Admin
Admin

Reputation : 7
Location : Tejas

Character Profile
Profession: Tutorial Writer Tutorial Writer

View user profile http://fortofwonders.forumotion.com

Back to top Go down

Re: Chemistry PostLab Answers [1/11/12] *Read Description*

Post by Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum