Search found 1565 matches

by ChenBeier
Wed Dec 06, 2017 12:09 pm
Forum: Chemistry forum
Topic: Nanoparticles? Citrate ion?
Replies: 1
Views: 4299

Citrate is an complex agent for gold ions. Immersion gold bathes also contain this beside cyanide.
by ChenBeier
Tue Dec 05, 2017 9:20 am
Forum: Chemistry forum
Topic: URGENT CuSO4*5H2O + (NH4)2S2O8?????
Replies: 1
Views: 4616

In aqueous solution you have ions present, what means Cu2+, NH4+ SO4 2-, S2O8 2- Theoretically you can write Cu2+ + 4 py + S2O8 2- => Cu(py)4S2O8 Ammonium and Sulfate is remaining. CuSO4*5H2O + (NH4)2S2O8 + 4 py => Cu(py)4S2O8 + (NH4)2SO4 + 5 H2O For silver its similar. 2 AgNO3 + (NH4)2S2O8 +4 py =>...
by ChenBeier
Mon Dec 04, 2017 8:27 am
Forum: Chemistry forum
Topic: Is there any interaction between Fe3O4 and FeCl3
Replies: 1
Views: 3397

No really

in Fe3O4 the iron has oxidation number 2 and 3 in FeCl3 its also 3. So there will be no reaction between. FeCl3 contains sometime some amount of HCl. The HCl is able to react with Fe3O4.
by ChenBeier
Sat Dec 02, 2017 10:23 am
Forum: Chemistry forum
Topic: A question about the Lead II chromate
Replies: 1
Views: 3076

Check and compare the solubility (product) of the two lead compounds.
by ChenBeier
Wed Nov 29, 2017 11:19 am
Forum: Chemistry forum
Topic: urgent H20+02+cl2+mn
Replies: 1
Views: 3516

Depending on the solubilty limit both gases can gas out.

Chlorine reacts like in clorinated water in a swimmingpool.

Cl2 + H2O = HCl + HclO

The oxygen will be dissolved physically.
by ChenBeier
Mon Nov 27, 2017 1:39 pm
Forum: Chemistry forum
Topic: chemistry reactions for 27.11.2017, urgent for my homework
Replies: 1
Views: 3401

The question was already answered. There is to less information. It cannot be solved.
by ChenBeier
Sun Nov 26, 2017 3:09 pm
Forum: Chemistry forum
Topic: VERY URGENT, CHEMÄ°CAL REACTÄ°ONS,this is my home work.
Replies: 1
Views: 3392

Generally iron reacts wit thiocyanate to blood red iron thiocyanate. Also use in making movies for film blood.

Fe3+ + 3 SCN- => Fe(SCN)3

This happens in Tube 1 to 4.

In Tube 5 its only dissolving of mercury nitrate
by ChenBeier
Fri Nov 24, 2017 1:02 pm
Forum: Chemistry forum
Topic: help me please
Replies: 2
Views: 3276

ChenBeier wrote:
Addition of NaCl

2 CuSO4 + SO2 + 2 H2O + 2 NaCl => 2 CuCl + NaS2O4 +H2SO4
Correction

2 CuSO4 + SO2 + 2 H2O + 2 NaCl => 2 CuCl + Na2SO4 + 2 H2SO4
by ChenBeier
Fri Nov 24, 2017 12:39 pm
Forum: Chemistry forum
Topic: help me please
Replies: 2
Views: 3276

Cu2+ + e- => Cu+ Reduction SO2 + 2 H2O => SO4 2- + 4 H+ + 2 e- Oxidation KGV = 2 2 Cu2+ + 2 e- => 2 Cu+ 2 Cu2++ SO2 + 2 H2O => 2 Cu+ + SO4 2- + 4 H+ Addition of sulfate 2 CuSO4 + SO2 + 2 H2O => 2 Cu+ + 3 SO4 2- + 4 H+ Addition of NaCl 2 CuSO4 + SO2 + 2 H2O + 2 NaCl => 2 CuCl + NaS2O4 +H2SO4 Addo f t...
by ChenBeier
Tue Nov 21, 2017 7:24 am
Forum: Chemistry forum
Topic: CH3CH(OH)CH3 + NaClO + H2O = ???
Replies: 3
Views: 5864

Why you need a calculation. If you get heart then go to a hospital and see a doctor.

Why did you mixture it, for what purpose.
In this mixture the IPA will be oxidized to acetone. If free chlorine is present also chlorineacetone can be formed . That is Teargas.
by ChenBeier
Tue Nov 21, 2017 7:20 am
Forum: Chemistry forum
Topic: NaClO+NaHCO3=??
Replies: 1
Views: 3812

No reaction.
by ChenBeier
Fri Nov 10, 2017 7:49 am
Forum: Chemistry forum
Topic: Work-up? What's going on?
Replies: 1
Views: 3085

An organic compounds solubility in water will be disturbed by inorganic ions. In your case the the sodium chloride dissolves very good and push out the organic compound of the water and make it more easy to get it dissolved in an organic solvent.
by ChenBeier
Sun Nov 05, 2017 12:29 pm
Forum: Chemistry forum
Topic: Quimica
Replies: 1
Views: 3428

Fe3+ + e- => Fe2+ Reduktion S2O3 2- + 5 H2O => 2 SO4 2- + 10 H+ + 8 e- oxidation KGV = 8 for electrons 8 Fe3+ +8 e- => 8 Fe2+ Addition 8 Fe 3+ + S2O3 2- + 5 H2O => 2 SO4 2- + 10 H+ + 8 Fe2+ add of SO4 2- and Na+ 4 Fe2(SO4)3 + Na2S2O3 + 5 H2O => 5 H2SO4 + 8 FeSO4 + Na2SO4 finished
by ChenBeier
Wed Nov 01, 2017 9:06 am
Forum: Chemistry forum
Topic: Help with equation
Replies: 2
Views: 6688

Ca => Ca2+ + 2 e- Oxidation 2 HNO3 to N2O Redox pair 2HNO3 + 8 H+ => N2O + 5 H2O Elimination of Oxygen to form water 2HNO3 + 8 H+ + 8 e-=> N2O + 5 H2O Charge balance smallest common multiple of electrons is 8 means 4 Ca => 4 Ca2+ + 8 e- Addition of both equations 2HNO3 + 8 H+ + 4 Ca => 4 Ca 2+ + N2O...
by ChenBeier
Wed Oct 25, 2017 8:09 am
Forum: Chemistry forum
Topic: Need help with an equation
Replies: 1
Views: 2769

You willl get Triethanolammonium fluoro silicate.

2 (HOCH2CH2)3N + H2SiF6 => [(HOCH2CH2)3NH]2SiF6