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Topic: Predicting Products  (Read 2954 times)

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Offline tummy

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Predicting Products
« on: July 25, 2018, 10:01:32 AM »
The question is: "ammonia gas and carbon dioxide are bubbled into water". I initially thought the reaction for this would be
1NH3(g) + 1CO2(g) + 1H2O(l)  :rarrow: 1NH4(HCO3) (aq) but I feel like this is wrong and I am not sure what the proper reaction should be or how to get it.
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Offline chenbeier

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Re: Predicting Products
« Reply #1 on: July 25, 2018, 11:29:36 AM »
It looks quite good. Depending on the amount of ammonia you can also get which one?
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Offline tummy

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Re: Predicting Products
« Reply #2 on: July 25, 2018, 11:36:16 AM »
I asked a friend and other sources online say that the product could also be (NH4)2(CO3) but I do not understand how they got this.
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Offline chenbeier

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Re: Predicting Products
« Reply #3 on: July 25, 2018, 12:01:17 PM »
Yes correct that is the other product. Compare yours and this one what is difference.
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Offline tummy

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Re: Predicting Products
« Reply #4 on: July 25, 2018, 12:21:13 PM »
The other product is just carbonate while I have the bicarbonate anion, but what would cause the bicarbonate to dissociate into carbonate?
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Offline chenbeier

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Re: Predicting Products
« Reply #5 on: July 25, 2018, 12:35:21 PM »
You dont see the forest, because to many trees.

Calulate all atoms of bicarbonate and the carbonate, what is the difference.
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Offline tummy

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Re: Predicting Products
« Reply #6 on: July 26, 2018, 09:31:33 AM »
There's 1 carbonate ion and 1 bicarbonate ion in the respective compounds. I still do not quite get it.
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Offline chenbeier

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Re: Predicting Products
« Reply #7 on: July 26, 2018, 02:42:51 PM »
I mean the whole molecule. NH4HCO3 in comparison with(NH4)2CO3
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Offline tummy

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Re: Predicting Products
« Reply #8 on: July 27, 2018, 12:14:14 PM »
There is 1 NH4 for 1 HCO3 in ammonium bicarbonate so 1N, 5H, 1C and 3O atoms and 2 NH4 for 1 CO3 in ammonium carbonate so 2N 8H 1C and 3O atoms?
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Offline chenbeier

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Re: Predicting Products
« Reply #9 on: July 27, 2018, 01:27:39 PM »
And now calculate the difference of the atoms, what is left. Is the hammer now dropping?
« Last Edit: July 27, 2018, 01:43:01 PM by chenbeier »
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Offline tummy

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Re: Predicting Products
« Reply #10 on: July 27, 2018, 01:34:10 PM »
The difference is 1N and 3H atoms so another NH3 molecule, but I don't understand what causes this difference in the mechanisms of the reaction.
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Offline chenbeier

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Re: Predicting Products
« Reply #11 on: July 27, 2018, 01:41:42 PM »
Yes correct.

Write your first equation again but use two ammonia now. What is the acidity of bicarbonate (hydrogrencarbonate?)

Additinally probably you get 3 other products as well. Think elimination of water in the two carbonates. Also addition of ammonia at carbondioxide. (amids).
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