Chem Lab Rep

Posted by JJ Endaya at 4:25 PM on Wednesday, November 30, 2011
Courtesy of Kim Ednalino.


Have to go now :)).

3 comments:

Jamie Dasmariñas said...

Hi Guys. Jamie Here. Compiled all the data our group got from the other Groups:

Data for all groups:

Group 1
NClOH - clear / NR
NaCr2O2 = clear / NR
d. H2O = rusted
HNO3 = corroded/rusted
NaCl = corroded/rusted (at bottom)
HCL = corroded/rusted (top to bottom); condensation at top

Group 2
NaOH = clear / NR
NaCr2O7 = clear / NR
NaCl = black sediments at bottom; layer of orange film near top of solution
HCl = black sediments at bottom; orange sediments floating
d.H2O = same as HCl

Group 3
KOH = clear / NR
Na2O3 = clear / NR
KNO3 = chemical slightly blue; nail turned darker
HNO3 = chemical turned murky orange; bubbles formed; nail turned darker
d. H2O = chemical turned slightly orange; black deposit at the bottom; nail didn't rust; black at surface of liquid

Group 4
[solution = nail exposed over time || w/ KFe(CN)3]
Na2CO3 = still clear || turned clear green
d. H2O = orange tinted with brown; black; rust || no change
KNO3 = clear orange; brown particle build-up at the bottom; rust || turned cloudy green
KOH = clear || clear green
HNO3 = orange, with rust (brown) build up at the bottom || blue
Ferrous Sulfate = clear || dark blue

Group 5
Na3PO4 = clear / NR
Na2C2O4 = clear / NR
Mg(OH)2 = yellowing 3/4 of solution up; black sediments at bottom
H2SO4 = bubbling yellow solution; rusted nail; brown sediments
d.H2O= brown sediments

Group 6
Na3PO4 = clear / NR
Na2C2O4 = clear / NR
Mg(OH)2 = light blue
H2SO4 = yellow with rust at the bottom
d.H2O = rust at the bottom

Hope this was helpful!

Wednesday, November 30, 2011 9:16:00 PM
Joseph Alexander Dela Cruz Paguio said...

PLEASE TAKE NOTE:

HNO3 isn't part of group 1.

Wednesday, November 30, 2011 9:30:00 PM
Jamie Dasmariñas said...

Oh sorry o.o. Must've read wrong then -_-;

Wednesday, November 30, 2011 9:57:00 PM

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