chemistry question

[jobberd]

On Buckley's (cough medicine) it says that the active ingredients are: Ammonium Carbonate, Potassium Bicarbonate, Menthol, and Camphor. Are these names the IUPAC names or the common names?

 

[Martin]

<< On Buckley's (cough medicine) it says that the active ingredients are: Ammonium Carbonate, Potassium Bicarbonate, Menthol, and Camphor. Are these names the IUPAC names or the common names? >>



the first two sound like IUPAC, the second two sound like common names...


after all, you can write down the formula for the first two jsut by looking at the names....

 

[MrBond]

I thought IUPAC names were something like 1-2-4 tert-butyl-alcohol, where you could draw the structure by the name alone. I'm fairly sure that's the case (I know we just did them in ochem). I can tell you for a fact that menthol is NOT an iupac name, I have the iupac name for it somewhere here.

 

[jobberd]

<< the first two sound like IUPAC, the second two sound like common names... >>

yeah thats what i though at first. but it wouldn't make sense to mix the two up when listing the ingredients. plus I came across this, which shows that ammonium carbonate is actually (NH4)2 CO3. So Im kinda confused as to what they're referring to

 

[punkrawket]

ammonium carbonate is (NH4)2 CO3
NH4 is ammonium, CO3 is carbonate
ammonium has a charge of +1, and carbonate has a charge of -2, to get a net charge of 0, you need two ammonium, hence (NH4)2 CO3

 

[jobberd]

<< ammonium carbonate is (NH4)2 CO3
NH4 is ammonium, CO3 is carbonate
ammonium has a charge of +1, and carbonate has a charge of -2, to get a net charge of 0, you need two ammonium, hence (NH4)2 CO3 >>

oops But what about Potassium Bicarbonate? First of all, you only use bi/tri/tetra when the compounds are two nonmetals? and second of all, Potassium has a charge of +1 while Carbonate has a charge of -2, which would make it K2CO3, not K(CO3)2

 

[Martin]

Potassium Bicarbonate is not (as I remember) K(CO3)2 , but has an extra Hydrogen atom, which decresease the Carbonate's valency.


so it would be

KHCO3

K has +1, HCO3 has -1 (since a hydrogen decrease the valency of oxyacids...)

 

[jobberd]

<< Potassium Bicarbonate is not (as I remember) K(CO3)2 , but has an extra Hydrogen atom, which decresease the Carbonate's valency.


so it would be

KHCO3

K has +1, HCO3 has -1 (since a hydrogen decrease the valency of oxyacids...) >>

wouldn't that make the IUPAC name potassium carbonic acid? and since carbonate has a charge of -2, wouldnt there be two hydrogen atoms to negate the charge? Im not doubting you, in fact it's verified here, but it just seems to contradict everything I've learned in chemistry so far

 

[Sukhoi]

Bicarbonate does not mean (CO3)2. It means HCO3. So potassium bicarbonate is KHCO3.

Bicarbonate also goes by hydrogen carbonate so you can also have potassium hydrogen carbonate which is the same thing as potassium bicarbonate.

 

[jobberd]

<< Bicarbonate does not mean (CO3)2. It means HCO3. So potassium bicarbonate is KHCO3. >>

I guess we didn't learn that yet in class That's one piece of the puzzle solved. Does this mean that Buckley's mixed common names with IUPAC names considering there's no way menthol and camphor are IUPAC names?

 

[punkrawket]

they probably did mix names because i'm thinking that the actual IUPAC names for menthol and camphor are way too long or complex, so it's just easier to say menthol and camphor

 

[jobberd]

<< they probably did mix names because i'm thinking that the actual IUPAC names for menthol and camphor are way too long or complex, so it's just easier to say menthol and camphor >>

ok then, the only thing left for me to do is to find the IUPAC name of those two. Thanks for all your help guys, I really appreciate it. I gave all of you 10s. its not much but its the least i could do

 

[minendo]

For all your chemistry questions use Chemfinder. It's a great site and you can find just about everything.

I use it all the time for my chem classes

 

[minendo]

menthol = cyclohexanol
camphor = 1,7,7-Trimethylbicyclo[2.2.1]heptan-2-one

 

[jobberd]

<< menthol = cyclohexanol
camphor = 1,7,7-Trimethylbicyclo[2.2.1]heptan-2-one >>

yup, i found it. Thanks alot for the great website

 

[nirgis]

Carbonic Acid is H2CO3

Bicarbonate is not iupac

 

[minendo]

potassium bicarbonate = Potassium hydrogen carbonate