Search found 739 matches

by ChenBeier
Tue Jan 09, 2018 6:39 am
Forum: Chemistry forum
Topic: Help for this reaction
Replies: 6
Views: 3648

What do you want to say

And its S + O2 => SO2

not 2O
by ChenBeier
Mon Jan 08, 2018 11:35 am
Forum: Chemistry forum
Topic: HELP
Replies: 2
Views: 3388

Error in the formulas.

it should be CH3CHOHCH3 2-Propanol

it can be oxidised with dichromate or Permanganate

and get CH3C=OCH3 acetone.
by ChenBeier
Mon Jan 08, 2018 10:29 am
Forum: Chemistry forum
Topic: Help for this reaction
Replies: 6
Views: 3648

Sulfur is combustible
by ChenBeier
Sun Jan 07, 2018 3:37 am
Forum: Chemistry forum
Topic: Help for this reaction
Replies: 6
Views: 3648

Try it with water. We cannot solve everybodies homework.
by ChenBeier
Sat Jan 06, 2018 5:41 am
Forum: Chemistry forum
Topic: Need help on what's the error ?
Replies: 20
Views: 8197

You didn't answer my question. What is your key target. You want to remove gold from an ore? Your Ore is FeO*Cr2O3*Au?

If this is the case I would use HCl.
by ChenBeier
Sat Jan 06, 2018 5:35 am
Forum: Chemistry forum
Topic: Balancing equation, please help!
Replies: 1
Views: 3188

First it is Mg(OH)2

Magnesium bond to two OH-groups.

Now you add hydrochloric acid HCl

each H will combine with OH to water H2O

Result

Mg(OH)2 + 2 HCl => MgCl2 + 2 H2O
by ChenBeier
Fri Jan 05, 2018 3:18 am
Forum: Chemistry forum
Topic: Need help on what's the error ?
Replies: 20
Views: 8197

Please describe what you want to do. Your equations make no sense.
by ChenBeier
Thu Jan 04, 2018 1:08 pm
Forum: Chemistry forum
Topic: number of atoms
Replies: 1
Views: 3119

4 times 2 is equal 8

In each molecule we have 8 oxygen atoms. Additional you have 3 iron and two phosphorous atoms.
by ChenBeier
Thu Jan 04, 2018 11:55 am
Forum: Chemistry forum
Topic: How can I balance this reaction?
Replies: 3
Views: 3420

MnO4- + 2 e- => MnO4 3- Reduction


4 OH- => 2 H2O + O2 + 4 e- Oxidation

Scm = 4


2 MnO4- + 4 e- => 2 MnO4 3-

Addition

2 MnO4- + 4 OH- => 2 MnO4 3- + 2 H2O + O2

finished
by ChenBeier
Tue Jan 02, 2018 8:40 am
Forum: Chemistry forum
Topic: Need help on what's the error ?
Replies: 20
Views: 8197

The error is what should this reaction be.

1. Either Educts and products have wrong formulas.

It is AgNO3 , Au2O or Au2O3, Ag2O, Cr(NO3)3, hydrogen will not be developed. And what should be Au*FeO*Cr2O3 and FeO *Cr2*SO2.
by ChenBeier
Sat Dec 16, 2017 3:48 am
Forum: Chemistry forum
Topic: Ethanol + amino ethane acid
Replies: 1
Views: 3337

First the formula of Amino ethane acid is NH2-CH2-COOH.
With ethanol CH3CH2OH it can react to an ester.

NH2-CH2-COOH + CH3CH2OH => NH2-CH2-COO-CH2CH3 + H2O

But if you mean NH2COOH Carbamic acid, then the reaction goes in this way,

NH2COOH + CH3CH2OH => CH3CH3NH2 +CO2
by ChenBeier
Fri Dec 15, 2017 12:33 pm
Forum: Chemistry forum
Topic: -N-N=O groups in PAH
Replies: 3
Views: 3248

That is what I said.
by ChenBeier
Fri Dec 15, 2017 12:11 pm
Forum: Chemistry forum
Topic: -N-N=O groups in PAH
Replies: 3
Views: 3248

These group is called Nitrosamine.

https://en.wikipedia.org/wiki/Nitrosamine
by ChenBeier
Mon Dec 11, 2017 8:19 am
Forum: Chemistry forum
Topic: Replacing charcoal with coal
Replies: 1
Views: 3131

To make explosives should not to be discussed in this forum.
by ChenBeier
Wed Dec 06, 2017 12:09 pm
Forum: Chemistry forum
Topic: Nanoparticles? Citrate ion?
Replies: 1
Views: 3320

Citrate is an complex agent for gold ions. Immersion gold bathes also contain this beside cyanide.