Which one
1,2-Propylene glycol or 1,3 Propylene glycol
But above you write in opposit direction
Propylen glycole down to ethylen glycole
Ethylenglycole to Glycolaldehyd HOCH2CHO
Glycolaldehyd + Methylgrignard => 1,2- Propylenglycol
Search found 1570 matches
- Sun Apr 14, 2024 2:30 pm
- Forum: Chemistry forum
- Topic: please help
- Replies: 8
- Views: 872
- Sun Apr 14, 2024 2:18 pm
- Forum: Chemistry forum
- Topic: please help
- Replies: 8
- Views: 872
Re: please help
Ok, where should the carbondioxide comes from?
What is your question
What is your question
- Sun Apr 14, 2024 2:11 pm
- Forum: Chemistry forum
- Topic: please help
- Replies: 8
- Views: 872
Re: please help
C3H8O2 => 4 C2H6O2 + 3 CO2
What is C3H8O2 and C2H6O2? Propandiol and ethandiol?
What help you need?
What is C3H8O2 and C2H6O2? Propandiol and ethandiol?
What help you need?
- Sun Apr 14, 2024 9:22 am
- Forum: Chemistry forum
- Topic: torasemide
- Replies: 1
- Views: 613
Re: torasemide
This is a chemical and not medicinic forum. Please ask there.
- Thu Apr 11, 2024 12:11 am
- Forum: Chemistry forum
- Topic: My question really is where does the disulfide bridge go
- Replies: 1
- Views: 643
Re: My question really is where does the disulfide bridge go
Normaly the Disulfid will connect two Polymer chain or the same chain for folding each other. Its also called crosslinking.
https://en.m.wikipedia.org/wiki/File:Di ... C)_V.1.svg
https://en.m.wikipedia.org/wiki/File:Di ... C)_V.1.svg
- Tue Apr 09, 2024 7:43 am
- Forum: Chemistry forum
- Topic: Mg(OH)2 + CaCO3 + H2O = Mg(HCO3)2 + Ca(OH)2
- Replies: 3
- Views: 654
Re: Mg(OH)2 + CaCO3 + H2O = Mg(HCO3)2 + Ca(OH)2
I dont think so, because the equilibrium will be on left side. Two precipitate on left and on right side only one.
Check the solubility constant from each product.
Also hydrogencarbonate is slightly acidic. Calcium hydroxide strong alcaline, this will neutralise.
Check the solubility constant from each product.
Also hydrogencarbonate is slightly acidic. Calcium hydroxide strong alcaline, this will neutralise.
- Tue Apr 09, 2024 4:56 am
- Forum: Chemistry forum
- Topic: Mg(OH)2 + CaCO3 + H2O = Mg(HCO3)2 + Ca(OH)2
- Replies: 3
- Views: 654
Re: Mg(OH)2 + CaCO3 + H2O = Mg(HCO3)2 + Ca(OH)2
First the equation is not balanced, second why do you think this should happen. To get hydrogencarbonate excess of carbondioxide is needed.
This works without and with the calcium already.
Can be find in stalactite caves.
This works without and with the calcium already.
Can be find in stalactite caves.
- Mon Apr 08, 2024 10:59 pm
- Forum: Chemistry forum
- Topic: Exercise on pH
- Replies: 3
- Views: 2116
Re: Exercise on pH
That is what I said above. Why repetation.
- Mon Apr 08, 2024 3:07 am
- Forum: Chemistry forum
- Topic: Question on Molarity and Solubility
- Replies: 5
- Views: 952
Re: Question on Molarity and Solubility
Read the principles of Le Chatelier. Here you make from two reactants one product. So it means decrease Volume or increase pressure will give more product .Figure out is the reaction exothermic or endothermic. Means consume or release heat. If it consumes rise temperature, in other case decrease tem...
- Sun Apr 07, 2024 11:38 pm
- Forum: Chemistry forum
- Topic: I need help with some questions and types of problems
- Replies: 1
- Views: 620
Re: I need help with some questions and types of problems
1. Soap is made of amphipathic particles, the hydrophil part dissolves in water the hydrophob part in fat or oil. The soap molecules develop micelles. A dirt particle is fatty, so the particle will be surounded from the soap molecules, by stickig the hydrophob part in. The hydrophil part will be in ...
- Fri Apr 05, 2024 1:04 am
- Forum: Chemistry forum
- Topic: Understanding the Equilibrium Constant Expression
- Replies: 1
- Views: 571
Re: Understanding the Equilibrium Constant Expression
Law of mass action
K = C^c*D^d/(A^a*B^b)
K = constant, so changes of one component will affect all others.
https://www.chemistrylearner.com/law-of ... ction.html
K = C^c*D^d/(A^a*B^b)
K = constant, so changes of one component will affect all others.
https://www.chemistrylearner.com/law-of ... ction.html
- Tue Apr 02, 2024 11:25 pm
- Forum: Chemistry forum
- Topic: How to make Sodium hydroxymethanesulfonate
- Replies: 11
- Views: 2047
Re: How to make Sodium hydroxymethanesulfonate
No it doesn't effect.
- Tue Apr 02, 2024 7:53 am
- Forum: Chemistry forum
- Topic: How to make Sodium hydroxymethanesulfonate
- Replies: 11
- Views: 2047
- Thu Mar 28, 2024 4:01 am
- Forum: Chemistry forum
- Topic: Redox reactions
- Replies: 5
- Views: 3096
Re: Redox reactions
Because in the logarithmen I used cox/cRed. Not the opposit. Log cox/ cred = - log cred/cox log/cI2/c^2I- = - logc^2I-/ cI2 https://en.m.wikipedia.org/wiki/Nernst_equation You are right it should be a minus like in the Literature but also the reduced form as numerator and the oxidised form as denomi...
- Thu Mar 28, 2024 12:50 am
- Forum: Chemistry forum
- Topic: Redox reactions
- Replies: 5
- Views: 3096
Re: Redox reactions
Redox Potentials are measured to hydrogen and considered as oxidation.
I-/I2 is positiv. 0,535 V
NO2-/ NO3- is also positiv 0,94 V
Elements are put in by definition as 1 .
I-/I2 is positiv. 0,535 V
NO2-/ NO3- is also positiv 0,94 V
Elements are put in by definition as 1 .