Asked by Gabby
Write the balanced formula equation, complete ionic equation, and net ionic equation. If no precipitate forms, write "No reaction"
a) Hg2(NO3)2 (aq) + CuSO4 (aq)
b) Ni(NO3)2 (aq) + CaCl2 (aq)
c) K2CO3 (aq) + MgI2 (aq)
d) Na2CrO4 (aq) + AlBr3
Please explain! Thank you
a) Hg2(NO3)2 (aq) + CuSO4 (aq)
b) Ni(NO3)2 (aq) + CaCl2 (aq)
c) K2CO3 (aq) + MgI2 (aq)
d) Na2CrO4 (aq) + AlBr3
Please explain! Thank you
Answers
Answered by
DrBob222
A reaction "goes" if one of three things happen.
a. a ppt forms,
b. a gas forms, or
c. a slightly ionized substance forms.
example c.
The balanced formula equation follows:
K2CO3(aq) + MgCl2(aq) ==> MgCO3(s) +
2KCl(aq)
For the complete ionic equation you separate all of the entities above into ions UNLESS the substance meets one of the three reasons why a reaction goes to completion. For any of the three above, you write the substance as molecules and not as ions.
2K^+(aq) + CO3^2-(aq) + Mg^2+(aq) + 2Cl^-(aq) ==> MgCO3(s) + 2K^+(aq) + 2Cl^-
Then we form the NET IONIC equation by canceling those ions common to both sides. That means we cancel 2K^+(aq) and 2Cl^-(aq) to leave the following:
Mg^2+(aq) + CO3^2-(aq) ==> MgCO3(s)
The ions you canceled are called spectator ions.
An example of a reaction that forms no ppt is b.
Obviously you need to know which salts are soluble. Here is a simplified table of solubility rules.
http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html
a. a ppt forms,
b. a gas forms, or
c. a slightly ionized substance forms.
example c.
The balanced formula equation follows:
K2CO3(aq) + MgCl2(aq) ==> MgCO3(s) +
2KCl(aq)
For the complete ionic equation you separate all of the entities above into ions UNLESS the substance meets one of the three reasons why a reaction goes to completion. For any of the three above, you write the substance as molecules and not as ions.
2K^+(aq) + CO3^2-(aq) + Mg^2+(aq) + 2Cl^-(aq) ==> MgCO3(s) + 2K^+(aq) + 2Cl^-
Then we form the NET IONIC equation by canceling those ions common to both sides. That means we cancel 2K^+(aq) and 2Cl^-(aq) to leave the following:
Mg^2+(aq) + CO3^2-(aq) ==> MgCO3(s)
The ions you canceled are called spectator ions.
An example of a reaction that forms no ppt is b.
Obviously you need to know which salts are soluble. Here is a simplified table of solubility rules.
http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html
Answered by
maxx
2mg(s)+o2(g)=2mgo(s)
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.