Search found 739 matches

by ChenBeier
Tue Apr 13, 2021 6:37 am
Forum: Chemistry forum
Topic: Sorry
Replies: 1
Views: 76

Re: Please help me

Please use better head line " Please help me" is not good
The equation is wrong and not balanced.
The mentioned table is missing
by ChenBeier
Tue Apr 13, 2021 2:03 am
Forum: Chemistry forum
Topic: mystery substance
Replies: 6
Views: 164

Re: mystery substance

Very strong chemical mixture. It will be an mixture of aluminiumoxide and -flouride.
by ChenBeier
Sat Apr 10, 2021 2:06 am
Forum: Chemistry forum
Topic: Finding out pH of the solution
Replies: 8
Views: 207

Re: Finding out pH of the solution

I dont know where you get the ml. Both acetic acid and sodium acetate are added as the mass. To get ml need specific gravity of 100% Acetic acid and sodium acetate is anyway a salt or need concentration before adding.
by ChenBeier
Fri Apr 09, 2021 10:20 am
Forum: Chemistry forum
Topic: Finding out pH of the solution
Replies: 8
Views: 207

Re: Finding out pH of the solution

Yes correct
by ChenBeier
Fri Apr 09, 2021 6:26 am
Forum: Chemistry forum
Topic: chemistry reactions
Replies: 1
Views: 130

Re: chemistry reactions

I dont think there is a special reaction. Maybe olny exchange to Gold sulfate and beryllium chloride.
by ChenBeier
Fri Apr 09, 2021 3:54 am
Forum: Chemistry forum
Topic: Finding out pH of the solution
Replies: 8
Views: 207

Re: Finding out pH of the solution

Yes I told you already. But how about b and c?
by ChenBeier
Thu Apr 08, 2021 11:39 pm
Forum: Chemistry forum
Topic: Finding out pH of the solution
Replies: 8
Views: 207

Re: Finding out pH of the solution

The chemical reaction is wrong. Its only a mixture of acetic acid and sodium acetate. There is no reaction. You forget the lightning on the right side. Leftside you have a negative charge what gives thunder storm on the right side. :mrgreen: On the other hand the calculation of pH is correct because...
by ChenBeier
Thu Apr 08, 2021 12:06 am
Forum: Chemistry forum
Topic: 2 FeCl3(aq) +3 Li2CO3(aq)--> Fe2(CO3)3(s)+6 LiCl (aq)
Replies: 1
Views: 121

Re: 2 FeCl3(aq) +3 Li2CO3(aq)--> Fe2(CO3)3(s)+6 LiCl (aq)

Which product will be solid?
The ions of that have to been used.
by ChenBeier
Wed Apr 07, 2021 9:07 am
Forum: Chemistry forum
Topic: MnCl2 won't dissolve?
Replies: 1
Views: 112

Re: MnCl2 won't dissolve?

How is the demineralzed water made. Maybe organic from manufacturing inside. Use destilled water instead. Add 1 ml HCl to get pH of 5 to 6.
Or the crued product contain oxidiser substances.
by ChenBeier
Tue Apr 06, 2021 9:53 pm
Forum: Chemistry forum
Topic: chemical reactions
Replies: 1
Views: 128

Re: chemical reactions

Write down the mass action law for this reaction. K is not given here. This information is missing.
Convert all compounds to SI units. Calculate H2 and N2 to mole via density and molar mass.
Fill in the mass action law equation use x.
by ChenBeier
Tue Apr 06, 2021 8:00 am
Forum: Chemistry forum
Topic: pH determination problems
Replies: 7
Views: 226

Re: pH determination problems

Used wrong formula H2SO3 is a middle strong acid. pKa1 is 1.8 pka2 is 7.

pH =( pk1 + pk2)/2

pH =(1.8 +7)/2 = 4.4
by ChenBeier
Tue Apr 06, 2021 1:59 am
Forum: Chemistry forum
Topic: What is the chemical reaction of sulphamic acid solution with trisodium phosphate solution
Replies: 1
Views: 105

Re: What is the chemical reaction of sulphamic acid solution with trisodium phosphate solution

Probably only a mixture. You get sulphamate anions an hydrogenphosphate anions. Sodium is spectator.
by ChenBeier
Mon Apr 05, 2021 11:07 am
Forum: Chemistry forum
Topic: pH determination problems
Replies: 7
Views: 226

Re: pH determination problems

Yes correct
by ChenBeier
Mon Apr 05, 2021 6:58 am
Forum: Chemistry forum
Topic: pH determination problems
Replies: 7
Views: 226

Re: pH determination problems

No
A. Alkaline, B. Neutral C. Neutral, D. Alkaline, E. Acidic, F. Acidic

Explain why.: in A compare NaOH and H2S
The same in the other questions
by ChenBeier
Mon Apr 05, 2021 2:30 am
Forum: Chemistry forum
Topic: please help me calculate stoichiometry
Replies: 2
Views: 131

Re: please help me calculate stoichiometry

Yours is correct. Above they used broken numbers and also not very accurate i would say wrong calculation. Example 7.97 H2O never can come from 1.027 C12H22O11.