## Reaction help!

Here are the homework questions, I tried but I think I still have most of them wrong.

[b]Write and balance equations for the following reactions:[/b]

a) [b]zinc sulphate + barium nitrate[/b] --->
b) [b]gold (III) sulphate + barium chloride[/b] --->
c) [b]zinc + mercurous chloride[/b] --->
d) [b]tin + antimony (v) chloride[/b] --->
e) [b]calcium + water[/b] --->
f) [b]ferrous bromide + phosphoric acid[/b] --->
g) [b]the complete combustion of ethene, C2H4[/b] --->
h) [b]calcium carbonate + hydrobromic acid[/b] --->

I did the following:

a) ZnSO4 + Ba(NO3)2 ---> Zn(NO3)2 + BaSO4
b) Au2(SO4)3 + 3BaCl2 ---> 3BaSO4 + 2AuCl3
c) 2Zn + Hg2(NO3)2 ---> 2Hg + ZnNO3
d) 5Sn + 2SBCl5 ---> 2Sb + 5SnCl2
e) Ca + 2H2O ---> Ca(OH)2 + H2
f) FeBr2 + H3PO4 ---> H2O + ?
g) C2H4 + 3O2 ---> 2H2O + 2CO2
h) CaCO3 + HBr ---> H2O + ?

I have no idea if these are right, as Im still learning on my own. Reactions really seem to confuse me. Anyways, any help with these, the ones that are right, which are wrong is appreciated.

Tags:

## Comment viewing options

a) ZnSO4 + Ba(NO3)2 ---> Zn(NO3)2 + BaSO4 Correct

b) Au2(SO4)3 + 3BaCl2 ---> 3BaSO4 + 2AuCl3 Correct

C) 2Zn + Hg2Cl2 ---> 2Hg + ZnCl2 Incorrect because nitrate is NO3 and zinc's valence is +2,so it needs two nitrates. The answer is Zn + Hg2(NO3)2 ---> Zn(NO3)2 + Hg2

D) 5Sn + 2SbCl5 ---> 2Sb + 5SnCl2 Correct

e) Ca + 2H2O ---> Ca(OH)2 + H2 Correct

F) 3FeBr2 + 2H3PO4 ---> 6HBr + Fe3(PO4)2 Correct

g) C2H4 + 3O2 ---> 2H2O + 2CO2 Correct

H) CaCO3 + 2HBr ---> CaBr2 + CO2 + H2O Correct!

### Re: Reaction help!

[quote="ScrubsFan"]a) ZnSO4 + Ba(NO3)2 ---> Zn(NO3)2 + BaSO4
b) Au2(SO4)3 + 3BaCl2 ---> 3BaSO4 + 2AuCl3
c) 2Zn + Hg2(NO3)2 ---> 2Hg + ZnNO3
d) 5Sn + 2SBCl5 ---> 2Sb + 5SnCl2
e) Ca + 2H2O ---> Ca(OH)2 + H2
f) FeBr2 + H3PO4 ---> H2O + ?
g) C2H4 + 3O2 ---> 2H2O + 2CO2
h) CaCO3 + HBr ---> H2O + ?[/quote]

[color=darkgreen]Okay, I'm horrible at balancing equations, so that's something you'll have to do yourself, but here goes...

A) Looks good. All the charges are correct and it looks like you formed the correct products. Simple double-replacement reaction.

B) Same thing as A.

C) Cloride and nitrate are not the same things. I suggest you go back and check your forumlas on that one...

D) Good. Another double-replacement reaction.

E) Also good. The hydrogen gas makes any of the col 1A or 2A metals fairly dangerous when added to water! :twisted:

F) Should make hydrobromic acid (HBr) and ferric phosphate.

G) Good with burning hydrocarbons. When burning them in sufficient oxygen, they will pretty much always make carbon dioxide and water.

H) You should make calcium bromide and water and carbon dioxide. The carbonic acid isn't stable enough and will turn into carbon dioxide and water. This is a double-replacement reaction before the acid breaks up.

Remember, most of the reactions are double-replacement. It doesn't look like there are any complex ones or redox (which is a good thing). Yay for descriptive chemistry! ;)[/color]

### Re: Reaction help!

[quote="ScrubsFan"]Here are the homework questions, I tried but I think I still have most of them wrong.

[b]Write and balance equations for the following reactions:[/b]

a) [b]zinc sulphate + barium nitrate[/b] --->
b) [b]gold (III) sulphate + barium chloride[/b] --->
c) [b]zinc + mercurous chloride[/b] --->
d) [b]tin + antimony (v) chloride[/b] --->
e) [b]calcium + water[/b] --->
f) [b]ferrous bromide + phosphoric acid[/b] --->
g) [b]the complete combustion of ethene, C2H4[/b] --->
h) [b]calcium carbonate + hydrobromic acid[/b] --->

I did the following:

a) ZnSO4 + Ba(NO3)2 ---> Zn(NO3)2 + BaSO4
b) Au2(SO4)3 + 3BaCl2 ---> 3BaSO4 + 2AuCl3
C) 2Zn + Hg2Cl2 ---> 2Hg + ZnCl2
D) 5Sn + 2SbCl5 ---> 2Sb + 5SnCl2
e) Ca + 2H2O ---> Ca(OH)2 + H2
F) 3FeBr2 + 2H3PO4 ---> 6HBr + Fe3(PO4)2
g) C2H4 + 3O2 ---> 2H2O + 2CO2
H) CaCO3 + 2HBr ---> CaBr2 + CO2 + H2O

I have no idea if these are right, as Im still learning on my own. Reactions really seem to confuse me. Anyways, any help with these, the ones that are right, which are wrong is appreciated.[/quote]

Corrections marked with capital letters

WebElements: the periodic table on the WWW [http://www.webelements.com/]