[///]

Can anyone tell me if this is right?

AuCl_3(aq) + Cd_(s) > Au_(s) + CdCl_2(aq)


I got to the step with the ratio question
There should be 3 Cd atoms when there are 2 Au atoms
So,

2AuCl_3(aq) + 3Cd_(s) > Au_(s) + CdCl_2(aq)

2AuCl_3(aq) + 3Cd_(s) > 2Au_(s) + 3CdCl_2(aq)

Is that all right?

Also, the ratio thing was sort of confusing.
I found that the difference in electrons for Au was 3, and the diff for Cd was 2, so then do I reverse the numbers and then it should be that there must be 3 Cd atoms for every 2 Au atoms?

Confusing:/

[Borek]

2AuCl_3(aq) + 3Cd_(s) > 2Au_(s) + 3CdCl_2(aq)

Just check if it is balanced - same number of atoms, same charge - so it must be OK

I found that the difference in electrons for Au was 3, and the diff for Cd was 2, so then do I reverse the numbers and then it should be that there must be 3 Cd atoms for every 2 Au atoms?

More or less that works, but don't treat it is a general method. For example 4:2 won't give correct result (remember that coefiicients have to be the lowest possible).

[///]

Thank you So much =)

[///]

How about this one:

NaI + HClO > NaIO3 + HCl
(Balance using Oxidation NUmber Method)

I got

2NaI + 6HClO > 2NaIO3 + 6HCl
Which reduces down to

NaI + 3HClO > NaIO3 + 3HCl

Correct?

[DevaDevil]

Correct?

Yes

[MCylla]

Okay....I am having the worst time in my chemistry class and we are currently balancing chemical equations.....and i am soo confused There are a few problems on this work sheet that she handed out to us and my brain is putting up the help i'm lost signal.....any and all help is greatly appreciated..


Sn + HF  Produce  SNF2 + H2

SiO2 + C produce   SiC2 + CO



  Dez

[Borek]

Start assigning oxidation numbers to all elements.

Hint: assume Si is always +4.