(YACHT) yet another chemistry help thread (balancing equations)

[MikeMike]

okay, we had a ton of equations to balance, and we got stuck on 3 of them

here they are, i cant figure them out

Cu2S + HNO3 ---> Cu(NO3)2 + CuSO4 + NO2 + H20

(help me balance that please i know it isnt that hard)

Ce(IO3)4 + H2C2O2 ---> Ce2(C2o4)3 + I2 + CO2 + H20

(no one in my class has figured this one out)

KBr + H2SO4 + MnO2 ---> KHSO4 + MnSO4 + H2O + BR2

(i havent gotten to this one, i had 4 other to balance)

and about 20 other balancing equations those are the only ones i cant figure out

THANKS in Advance
Mike

Wow it took me a while to figure out i mistyped that thanks for the hint splork

 

[Moonbeam]

First one looks like maybe:

2cu2s + 12hno3---------->2cu(no3)2 + 2cuso4 +8no2+ 6h2o

 

[MikeMike]

night time ppl help please

 

[Moonbeam]

I miss-crackulated my firswt time. Try:

6cu2s + 52h(no3) --> 6cu(no3) + 6cu(so4) + 40no2 + 26h2o

 

[MikeMike]

bump, thankyou moonbeam, i am now trying to work on these myself also

 

[Splork]

Here's one:

2KBr + 3H2SO4 + MnO2 -> 2KHSO4 + MnSO4 + 2H2O + Br2

-sp

 

[Splork]

BTW, the second rxn is impossible...You can't start off with Cesium and end up with K and Mn, heh. I think you mistyped it.

-sp

 

[MikeMike]

Originally posted by: Splork
Here's one:

2KBr + 3H2SO4 + MnO2 -> 2KHSO4 + MnSO4 + 2H2O + Br2

-sp

yeah i just got that, but the middle one is stumping my whole class and seems to be needing high numbers

Thanks Splork

now try it was stumping my class with the normal stuff thanks

 

[Splork]

Are you sure about the middle one? See my previous post...

 

[sash1]

edit: sorry messed up, gotta recalculate

 

[MikeMike]

wow i cant believe i missed that sry splork

 

[Splork]

Originally posted by: Moonbeam
I miss-crackulated my firswt time. Try:

6cu2s + 52h(no3) --> 6cu(no3) + 6cu(so4) + 40no2 + 26h2o

Are you sure this is right? What happened to Cu(NO3)2

-sp

 

[Splork]

Originally posted by: nourdmrolNMT1
wow i cant believe i missed that sry splork

NP, I'm still werkin' on the first one.. it's tricky

 

[MikeMike]

Originally posted by: Splork

Originally posted by: Moonbeam
I miss-crackulated my firswt time. Try:

6cu2s + 52h(no3) --> 6cu(no3) + 6cu(so4) + 40no2 + 26h2o

Are you sure this is right? What happened to Cu(NO3)2

-sp

it works out if you throw the 2 in there i believe (begins recalculating)

 

[Splork]

Here's the first one:

Cu2S + 12HNO3 --> Cu(NO3)2 + CuSO4 + 10NO2 + 6H2O

Cheers.

-sp