Chemistry Forum

What did you add to get it?

Show your calculations.

Develop the redox equation. Then you can see the ratio of the moles easily.

Hint acidic medium means, if oxygen will be transferred.

Oxidation add H2O and get H+
Reduction add H+ and get H2O

Oxalate will get CO2

If you don't wright charges then put all atoms together.

C18H27Cl2N3O4

It's a neutralisation like NH3 + HCl => NH4+ + Cl-
A nitrogen in the chloroquine attract one H+ so the molecule will be posiv charged.

If you use diluted Perchloracid then you get C18H26ClN3 + HClO4 → ClO4- + C18H27ClN3+.

But if you use concentrated one, then producte CO2, H2O, HCl, N2 and crack compounds.

If this is the calculation, then

0.005 * 1000 = 5 not 0.5 isn't it.

The result would be 5, answer B

I think with the given equations you can develop by yourself. Add both equations so that the electrons will be erased,.

Please dont write products if you don't know what is going on.

Thiosulfat will be go to sulfate

S2O3 2- + 10 OH- => 2 SO4 2- + 5 H2O + 8 e-

Ozon will be to normal oxygen

O3 + H2O + 2 e- => O2 + 2 OH-

1) Very exotic compounds
a) In my opinion compound a is not existing.
Instead Calcium tetrachloroargentat-III would be Ca(AgCl4)2
b) Di nitro di aqua cadmium is (NO2)2(H2O)2Cd
2) 415 nm is blue colour
3) no solution
4) calcium tetracyanadiate (II). Not existing

Thiosulfate will be oxidised to sulfate performiat to formiat.

S2O3 2- + 10 OH- => 2 SO4 2- + 5 H2O + 8 e- Oxidation

HCOOOH + 2e- => HCOO- + OH- Reduction

Combine

Please dont answer 5 year ooldquestions
Loggged

I really don't know what you want to know.

Information can be find here

https://en.m.wikipedia.org/wiki/Sodium_metabisulfite

Your answer is correct.
The error is in 2/40 * 1000/250

It has time be 0,2/40 * 1000/250

No number of the given results fullfill the value of 76.72 °C