[Kate]

Hello
I'm having some , well, a lot of trouble doing the following equations. If somebody knows how to, could you please take the time to help me on this ? Thank you.

1) BaSO4 + H2O2 + HCl (diluted) + Na2SO3 + BaCl2 + HCl (concentrated)

2) BaSO4 + H2O2 + H2SO4 + KI + C6H12 (cyclohexane)

3) BaSO4 + H2O2 + H2SO4 + FeSO4 + NaOH

4) BaSO4 + H2O2 + H2SO4 + FeSO4 + NH4SCN

5) BaSO4 + H2O2 + H2SO4 + KMnO4 + NaOH

6) BaSO4 + H2O2 + MnO2

 

[AWK]

BaO2 reacts with acids (even with H2CO3) to form H2O2.
H2O2 can oxidize mamy compounds, eg Na2SO3, FeSO4,
reduce some compounds eg KMnO4 in acidic or basic conditions or decompose on catalyst ie MnO2.

Fe2(SO4)3 reacts with NH4SCN , and specific color appears.
Write down these reactions

Be careful writing down reactions in this way???

3) BaSO4 + H2O2 + H2SO4 + FeSO4 + NaOH

[Kate]

Thanks for the reply. Nevermind my first post, I was "little" confused. Ok, so could someone evaluate the following equations (to see if they're correct) and answer a few questions I have ? Thanks. 

1) BaO2.8H2O + H2SO4 -> BaSO4 + H2O2 + 8 H2O

2) H2O2 + 8 H2O + 2HCl (diluted) + Na2SO3 -> H2O2 + 9H2O + SO2 + 2NaCl

3) H2O2 + 9H2O + SO2 + 2NaCl + BaCl2 + HCl (concentrated) -> BaO2 + 3HCl + SO2 + 2NaCl + 9H2O

4) 3H2O2 + 8H2O + H2SO4 + 2KI -> K2SO4 + I2 + 12H2O + O2

5) What happens when I mix C6H12 (cyclohexane) with K2SO4 + I2 + 13H2O + O2 ?

6) What happens when I mix H2SO4 + FeSO4 with H2O2 + 8H2O ? Is it H2SO5 + H2SO4 + 8H2O + FeO ?

(FeSO4) -> Iron (II) sulfate

7) What happens when I mix H2SO4 + KMnO4 with H2O2 + 8H2O ? Is it K2SO4 + 2MnSO4 + 16H2O + 5O2 ? What's the gas that is set free ? O2 right ?

What happens when I mix K2SO4 + 2MnSO4 + 16H2O + 5O2 with NaOH ?

9) What happens when I mix H2O2 + 8H2O + MnO2 (IV) ? What's the gas that is set free ?

[AWK]

2 H2O2 reacts further with H2SO3
3 ?
4. O2 is not needed
5. again ? specify reaction
6 - 9. I told previously

[Kate]

OK, I think I finally got it. Can you tell me if this is correct now ?

Misture of H2O2 with HCl (diluted) + Na2SO3:

Na2SO3 + H2O2 + 2HCl -> H2SO3 + H2O2 + 2NaCl

Misture of H2SO3 with BaCl2 + HCl (concentrated):

H2SO3 + H2O2 + 2NaCl + BaCl2 + HCl -> H2SO3 + 2NaCl + BaO2 + 3HCl

Misture of H2O2 with H2SO4 + KI:

3H2O2 + 2H+ + SO42- + 2K+ + 2I- ->  K2SO4 + 4H2O + I2 + O2

Misture of H2O2 with H2SO4 + FeSO4:

H2O2 + 2H+ + SO42- + Fe2+ + SO42- -> Fe2(SO4)3 + H2O

Misture of Fe2(SO4)3 + H2O with NaOH:

2Fe3+ + 3SO42- + 3Na+ OH- -> 2Fe(OH)3 + 3Na2SO4

Misture of Fe2(SO4)3 + H2O with NH4SCN:

2Fe3+ + 3SO42- + 6NH4+SCN- -> 2 Fe(SCN)3 + 3 (NH4)2SO4

Misture of H2O2 with H2SO4 + KMnO4:

2 KMnO4 + 3 H2SO4 + 5 H2O2 -> K2SO4 + 2MnSO4 + 8H2O +5O2

Misture of K2SO4 + 2MnSO4 + 8H2O +5O2 with NaOH:

K2SO4 + 2MnSO4 + 2NaOH -> Na2So4 + 2KOH + 2MnSO4

Misture of H2O2 + MnO2:

H2O2 + MnO2 -> O2 + H2O + Heat

I found this equation on the internet. It might be a little stupid, but why did Mn4+ disappeared ?

I still don't know what happens when I mix K2SO4 + 2H2O + I2 with C6H12 ? Any tips ?

[AWK]

H2O2 + 2H+ + SO42- + Fe2+ + SO42- -> Fe2(SO4)3 + H2O

Not balanced

2Fe3+ + 3SO42- + 3Na+ OH- -> 2Fe(OH)3 + 3Na2SO4
2Fe3+ + 3SO42- + 6NH4+SCN- -> 2 Fe(SCN)3 + 3 (NH4)2SO4
H2O2 + MnO2 -> O2 + H2O + Heat

Almost correct. Should be
2Fe3+ + 3SO42- + 3Na+ + OH- -> 2Fe(OH)3 + 3Na2SO4
or use NaOH and NH4SCN as formal molecules
MnO2 do not disappered. It is a catalyst and should be written over the arrow.

2 KMnO4 + 3 H2SO4 + 5 H2O2 -> K2SO4 + 2MnSO4 + 8H2O +5O2

Only correct

I still don't know what happens when I mix K2SO4 + 2H2O + I2 with C6H12 ? Any tips ?

Iodine itself do not iodinates the cyclohexane. But when used with a strong oxidizer you can obtain C6H11I.
The oxidizer removes HI from reaction mixture. Otherwise HI acts as reductor and harms iodination reaction.
K2SO4 is not the oxidizer hence reaction cannot proceed.