OPTION: Industrial Chemistry (2 Viewers)

[Thank_You]

Guys overall thoughts on Industrial Chemistry

For the choosing for electrolytic i picked the first one, which had products Cl and O gas. I think that was 'X' and it's wrong apparently because industrial is concentrated brine
Apparently it's the second one, Y?

 

[photastic]

Wasnt the 1st one H2 and O2?

 

[Thank_You]

oh JOKES, yeah it is:

X O2 / H2
Y Cl2/H2
Z Cl2/Na

 

[2ndt0m3h]

answer is y cell y

 

[90atarpls]

did any1 get the concentration as 0.8 mol/l or w/e

 

[faisalabdul16]

The answer is Y because the anode in all cells are chlorine, therefore ruling out X immediately.
The cathode in a mercury cell is an amalgam, not just Na therefore z is ruled out.
The cathode in y = correct

 

[Thank_You]

^For the equilibrium question, i got like 1.177 M for NOCl :O

The answer is Y because the anode in all cells are chlorine, therefore ruling out X immediately.
The cathode in a mercury cell is an amalgam, not just Na therefore z is ruled out.
The cathode in y = correct

I'm so stupid, i've studied this pretty well and yet -.-

 

[faisalabdul16]

did any1 get the concentration as 0.8 mol/l or w/e

yes.

Very unique question, never came across one like this

 

[photastic]

The answer is Y because the anode in all cells are chlorine, therefore ruling out X immediately.
The cathode in a mercury cell is an amalgam, not just Na therefore z is ruled out.
The cathode in y = correct

Why didnt you tell us during the exam? lolol

yes.

Very unique question, never came across one like this

Lol its just a typical question but backwards

 

[2ndt0m3h]

I got like 0.84 (2 sf)

 

[IR]

did any1 get the concentration as 0.8 mol/l or w/e

eyep

 

[Thank_You]

yes.

Very unique question, never came across one like this

WHAT HOW, are you sure ? Please solutionsssss
fml

 

[IR]

OH BTW GUYS:
if i did ammonia saturator for model:
10 mL of concentrated ammonia solution (30%) was mixed with 10 mL of brine . 10g of ammonium chloride crystals were dissolved into the solution, and then more continuously added in excess till no more dissolved. The clear solution was then decanted into a 250 ml beaker.
How does this not model the industrial process?

 

[IR]

OH BTW GUYS:
if i did ammonia saturator for model:
10 mL of concentrated ammonia solution (30%) was mixed with 10 mL of brine . 10g of ammonium chloride crystals were dissolved into the solution, and then more continuously added in excess till no more dissolved. The clear solution was then decanted into a 250 ml beaker.
How does this not model the industrial process?

I wrote not the same concentration in industrial process with not the same conditions i.e. temperature and pressure. Also wrote that nh3 is added and no ammonium crystals in the industrial process- is this ok for the 3 marks?

 

[ushnakhalid]

does anyone have a photo of the equilibrium question?

 

[zhertec]

I also did cell Y and didn't get to finish the industrial kc one, imma cry now.

 

[IR]

I wrote not the same concentration in industrial process with not the same conditions i.e. temperature and pressure. Also wrote that nh3 is added and no ammonium crystals in the industrial process- is this ok for the 3 marks?

Plz answer.

 

[Cleverusername5321]

The equilibrium question was something like .175 IIRC. I lost my calculator, so I can't show the working.
NaOH question was cell Y for sure.
2H2O + 2e- --> H2 + 2OH-
2Cl- --> Cl2 + 2e-
Overall: 2H2O + 2NaCl --> H2 + Cl2 + 2NaOH

 

[ushnakhalid]

I wrote not the same concentration in industrial process with not the same conditions i.e. temperature and pressure. Also wrote that nh3 is added and no ammonium crystals in the industrial process- is this ok for the 3 marks?

i would assume so. i had that a higher concentration of ammonia is used in the industrial process but what you wrote is also right

 

[IR]

i would assume so. i had that a higher concentration of ammonia is used in the industrial process but what you wrote is also right

Thanks