Search found 1560 matches

by ChenBeier
Tue Apr 16, 2024 8:38 am
Forum: Chemistry forum
Topic: Complete these reactions
Replies: 4
Views: 49

Re: Complete these reactions

AgTiO2 and MnTiO2 cannot be. Silver is monovalent, manganese bivalent and titanium tetra valent. The 3 reactions I had given already. AgxTi(1-x)O2 and MnyTi(1-y)O2. Make also no sense . If you put 1 for x or y then it would give AgO2 and MnO2 Manganese would be possible, but then has to use Mn-IV co...
by ChenBeier
Mon Apr 15, 2024 10:13 pm
Forum: Chemistry forum
Topic: Complete these reactions
Replies: 4
Views: 49

Re: Complete these reactions

That is only a hydrolysis.

Ti(OC3H7)4 + 2 H2O => TiO2 + 4 C3H7OH

The Hydroxide will give Manganese- or silver oxide, what will be built in the Titaniumdioxide particles

2 AgNO3 + 2 NaOH => Ag2O + 2 NaNO3 + H2O

MnSO4 + 2 NaOH => MnO + Na2SO4 + H2O

A reducer is able to reduce to silver.
by ChenBeier
Mon Apr 15, 2024 3:07 am
Forum: Chemistry forum
Topic: Temperature effect on the reaction
Replies: 1
Views: 17

Re: Temperature effect on the reaction

Figur out if the reaction is exothermic or endothermic.
If exothermic equilibrium shifts left, if endothermic it shifts right, if temperature is increase.
by ChenBeier
Sun Apr 14, 2024 2:48 pm
Forum: Chemistry forum
Topic: please help
Replies: 8
Views: 114

Re: please help

I am confused now what you want?
Ps: you can edit your Postings
by ChenBeier
Sun Apr 14, 2024 2:30 pm
Forum: Chemistry forum
Topic: please help
Replies: 8
Views: 114

Re: please help

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
by ChenBeier
Sun Apr 14, 2024 2:18 pm
Forum: Chemistry forum
Topic: please help
Replies: 8
Views: 114

Re: please help

Ok, where should the carbondioxide comes from?
What is your question
by ChenBeier
Sun Apr 14, 2024 2:11 pm
Forum: Chemistry forum
Topic: please help
Replies: 8
Views: 114

Re: please help

C3H8O2 => 4 C2H6O2 + 3 CO2

What is C3H8O2 and C2H6O2? Propandiol and ethandiol?

What help you need?
by ChenBeier
Sun Apr 14, 2024 9:22 am
Forum: Chemistry forum
Topic: torasemide
Replies: 1
Views: 26

Re: torasemide

This is a chemical and not medicinic forum. Please ask there.
by ChenBeier
Thu Apr 11, 2024 12:11 am
Forum: Chemistry forum
Topic: My question really is where does the disulfide bridge go
Replies: 1
Views: 55

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
by ChenBeier
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: 51

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.
by ChenBeier
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: 51

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.
by ChenBeier
Mon Apr 08, 2024 10:59 pm
Forum: Chemistry forum
Topic: Exercise on pH
Replies: 3
Views: 516

Re: Exercise on pH

That is what I said above. Why repetation.
by ChenBeier
Mon Apr 08, 2024 3:07 am
Forum: Chemistry forum
Topic: Question on Molarity and Solubility
Replies: 1
Views: 44

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...
by ChenBeier
Sun Apr 07, 2024 11:38 pm
Forum: Chemistry forum
Topic: I need help with some questions and types of problems
Replies: 1
Views: 45

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 ...