Naming and writing formulas of compounds

1. chemzz

18
Name the following :ZnI2, BrF, FeSO3, CaH2, BaHPO3,CuNO3, AgIO, SO2

write the correct formula of these: zinc sulphate, barium nitrate, gold(III)nitrate, barium chloride, mercurous nitrate, antimony(V)cloride, ferrous bromide, calcium carbonate and hydrobromic acid.

i have attempted them as aswell....
ok...so i got these...
ZnI2 - Zinc Iodide
BrF-Barium Floride
FeSO3- Iron sulphite
CaH2- Calcium hyroxide
BaHPO3-Barium hypophosphate
CuNO3- Copper Nitrate
AgIO2- Gold(II)Idoxide
SO2- Sulphide

For the formulas i got...
zinc sulphate- ZnSO3
barium nitrate-BaNO3
gold(III)sulpahte- AgSO3
barium chloride- BaCl
mercurous nitrate- i don't get this one!
antimony (V) cloride- AtCl5
ferrous bromide- FeBr
calcium carbonate- CaCO3
hydrobromic acid- HBO3

Last edited: Jul 25, 2007
2. chemzz

18
here u go....:)

3. cristo

8,386
Staff Emeritus
What is Br the symbol for? (It's not barium)
No, calcium hydroxide is Ca(OH)2. The formula you are trying to name does not have the oxygen in, and so is calcium hydride.
correct
Well, Ag is silver. To be honest, I don't know this one either!
That's not correct. What is CO2? Can you tell from this what SO2 is?

No. You seen to be getting confused with the oxyanions. Compounds ending in SO4 are sulphates; compounds ending in SO3 are sulphites.
correct
The chemical symbol for Gold is Au. Also, I'm sure the question says gold(III) nitrate. What does the III in brackets mean?
No, your charges on this compound don't balance. Look at which groups each element is in in the periodic table.
I think mercurous means the 1+ ion of mercury.
At is astatine-- check your periodic table!
Ferrous means iron(II) ions
correct
B is no the symbol for bromine. Do you know the formula for hydrochloric acid? If so, can you get from this the formula for hydrobromic acid?

[And, for the record, I'm not a chemist, and haven't taken chemistry for quite a while-- that's why I don't know the answres to some of the questions! Someone who does know them will be along soon, I'm sure!]

Last edited: Jul 25, 2007

8,809
5. Gokul43201

11,044
Staff Emeritus
Barium nitrate is not BaNO3.

Chemzz, it looks like you're guessing many of these. There's a systematic way to do these that you need to learn first.

See the link in the above post, as well as http://www.ausetute.com.au/wriiform.html

6. cristo

8,386
Staff Emeritus

7. akeber0

11
Br stands for bromine and B stands for boron

8. symbolipoint

3,426
Barium biphosphite

9. dee.

2
hi. I'm a student that doesn't understand how to write the formulas to compounds. if you could help me, please do. thanks.