Search found 1227 matches

by ChenBeier
Fri Jan 27, 2023 12:55 am
Forum: Chemistry forum
Topic: Balancing Chemical equations
Replies: 1
Views: 108

Re: Balancing Chemical equations

What is the formula of Galliumchlorate and Galliumchloride.
What are your own ideas for the decomposition.
by ChenBeier
Tue Jan 24, 2023 10:47 pm
Forum: Chemistry forum
Topic: Please help me with optically activity of cis trans isomer
Replies: 4
Views: 77

Re: Please help me with optically activity of cis trans isomer

Its B , because it asked for trans fat. D is the cis fat.
by ChenBeier
Tue Jan 24, 2023 10:41 pm
Forum: Chemistry forum
Topic: Please help me with optically activity of cis trans isomer
Replies: 4
Views: 77

Re: Please help me with optically activity of cis trans isomer

B and D have chirality Center in the glycerol unit, because 4 different substituents.
by ChenBeier
Sun Jan 15, 2023 12:30 am
Forum: Chemistry forum
Topic: Balance the Equation.
Replies: 2
Views: 298

Re: Balance the Equation.

Correct
by ChenBeier
Fri Jan 13, 2023 2:38 am
Forum: Chemistry forum
Topic: Balancing a cyanotype (time sensitive)
Replies: 1
Views: 87

Re: Balancing a cyanotype (time sensitive)

The basic reaction is Fe 3+ + [Fe(CN)6] 4- You get Fe4[Fe(CN)6]3 The other ions are spectator ions. By the way there is no potassium developed. Impossible in aqueaeous solution. Iron II is build by photochemical reduction under help of citric acid. See in this paper below https://www.chem-page.de/ex...
by ChenBeier
Wed Jan 11, 2023 11:25 pm
Forum: Chemistry forum
Topic: Sodium Acetate Buffer
Replies: 1
Views: 65

Re: Sodium Acetate Buffer

I think ammonium would disturb the chlorine detection. Need to know the whole analytical procedure.
Sodium acetate is easy to make, by using sodium hydroxide or (hydrogen)carbonate and acetic acid.
by ChenBeier
Thu Jan 05, 2023 10:03 am
Forum: Chemistry forum
Topic: Synthetic balanced chemical equation of Arsphenamine(Salvarsan)
Replies: 3
Views: 188

Re: Synthetic balanced chemical equation of Arsphenamine(Salvarsan)

It is like in Mathematics. 1/2 +1/3 = ?
The kgV ( kleinste gemeinsame Vielfache = least common multiple) is 6 so convert to 3/6 + 2/6 = 5/6
The same you do with the electrons in oxidation and reduction equation.
by ChenBeier
Thu Jan 05, 2023 2:07 am
Forum: Chemistry forum
Topic: Synthetic balanced chemical equation of Arsphenamine(Salvarsan)
Replies: 3
Views: 188

Re: Synthetic balanced chemical equation of Arsphenamine(Salvarsan)

Dithionite to sulfate S2O4 2- + 4 H2O => 2 SO4 2- + 8 H+ + 6 e- Arsenic acid to Salvarsan 2 RAsO3H2 + 8 H+ + 8 e- => RAs=AsR + 6 H2O Nitrogroup 2 RNO2 + 12 H+ + 12 e- => 2 RNH2 + 4 H2O Sum Reduction 2 RNO2AsO3H2 + 20 H+ + 20 e - => NH2RAs=AsRNH2 + 10 H2O KgV of electrons = 60 10 S2O4 2- + 40 H2O => ...
by ChenBeier
Wed Jan 04, 2023 7:07 am
Forum: Chemistry forum
Topic: Dissolution of alkali metals in liquid ammonia
Replies: 5
Views: 528

Re: Dissolution of alkali metals in liquid ammonia

Its written above x,y € Re.
Can be every number.
by ChenBeier
Tue Dec 20, 2022 10:46 pm
Forum: Chemistry forum
Topic: Ask for correct formula
Replies: 4
Views: 336

Re: Ask for correct formula

Both reactions will not take place Peroxide and sulfuric acid exist both side by bside. Its opposit if you have peroxomonosulfate, will decompose to sulfuric and peroxide SO5 2- + 2 H+ + H2O => H2SO4 + H2O2 But the second is nonsense SiO2 can only react with flourides or strong alcaline compounds or...
by ChenBeier
Sat Dec 17, 2022 1:40 pm
Forum: Chemistry forum
Topic: Ask for correct formula
Replies: 4
Views: 336

Re: Ask for correct formula

It has to be H2O not H20
by ChenBeier
Sat Dec 10, 2022 10:27 am
Forum: Chemistry forum
Topic: Hydrogen Bonding
Replies: 2
Views: 215

Re: Hydrogen Bonding

It is a matter of crystalisation. Pottasium is bigger then sodium. This chain is formed only in solid compound. In solution we have enough water to destroy it by hydrogen bonds to it. Some information https://chemistry.stackexchange.com/questions/64298/hydrogen-bonding-in-solid-bicarbonates Hybridis...
by ChenBeier
Fri Dec 09, 2022 10:12 am
Forum: Chemistry forum
Topic: synthesis
Replies: 1
Views: 125

Re: synthesis

Add slowly chips of sodium metal to dry methanol. Avoid any water.

https://en.m.wikipedia.org/wiki/Sodium_methoxide
by ChenBeier
Thu Dec 08, 2022 2:06 pm
Forum: Chemistry forum
Topic: Questions from general chemistry - mixing of solutions and balancing of equations of redox reactions
Replies: 3
Views: 173

Re: Questions from general chemistry - mixing of solutions and balancing of equations of redox reactions

Cross rule check here https://bodheeprep.com/mixture-and-alligation Given solutions 32% and 9,96 % , target is 20% Above write the larger one here 32% below the lower one 9,96% In the middle of the cross the target 20%. Build difference to get weight part 32 - 20 = 12 and 20 - 9,96 = 10,04 Convert t...
by ChenBeier
Thu Dec 08, 2022 10:33 am
Forum: Chemistry forum
Topic: Calculation of mass %
Replies: 4
Views: 194

Re: Calculation of mass %

If you check a table of redoxpotentials you will find that aluminium -1,662 V and also lead -0,14 V have negative values . The only positiv one is silver +0,799 V. Copper +0,342 V also have a positiv value, but its smaller then silver. So copper nitrate can react with aluminium and lead and will be ...