Chemistry Forum

Even I calculated it, the result is the same as yours. This is an example from a chemical competition, and the official answer is 14 A. But now I'm not sure what to do, so I turned to this forum for help. So you don't believe it's possible to achieve 14 amperes in any case?

Thanks, but the problem is that the solutions say the answer is 14 A. Is that possible?

31 g of pure K3PO4 are dissolved in 250 g of distilled water at a density of 1 g / mL. The resulting solution is then electrolyzed for 14 hours under constant electric current. After electrolysis, the mass fraction of salt in the solution increases by 3.4%, and the mass and appearance of the electro...

Hello,

I would like to ask you a question about a mixture of two ionic compounds:

If we dissolve equal amounts of NaCl and KI in water and then evaporate the solvent, is it possible that I end up getting some NaI and KCl as well? Why yes or why not?


Thank you in advance!

Hello,

I would like to ask you a question about Nernst equation. So this is the correct notation of Nernst's equation if I want to calculate the pH measured with a pH meter?:
\( E= E0 + (2,3RT)/(nF) * pH \)
So does a pH meter use this equation to calculate pH?




Thank you in advance!

Hello, I would like to ask you a question about preparing a sample for flame photometry: The calibration curve is in the range 0 - 20 mg Na{+} / L. The liquid sample contains only 0.55 mg Na{+} / L. How will you prepare the sample until the signal in the flame photometric analysis falls into the cen...

Hello,

I would like to ask you a question about titration:

To neutralize 1 gram of a sample containing KOH and Ba(OH)2 13.5 mL of hydrochloric acid at a concentration of 1 mol/L was used. What is the composition of the sample?


Thank you in advance!

Hello, I would like to ask you a question about titration of mixture of strong and weak acid: 50.0 ml of a solution containing HCl and a weak acid HX consume 48.7 ml of 0.115 M NaOH when titrated to phenolphthalein. Titrate the other 50 ml to methyl orange and consume 17.4 ml of base. What is the mo...

How do I edit this chemical equation? I ask for the procedure.

CuSCN + KIO3 + HCl = CuSO4 + KCl + HCN + ICl + H2O

Thank you in advance!