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Topic: Predicting the outcome of a series of reactions.  (Read 7798 times)

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Offline Geddoe

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Predicting the outcome of a series of reactions.
« on: October 07, 2009, 12:12:19 AM »
Hi!  :)

Given the following reactions I am asked to predict the outcome, basically write out the equation and provide the state of the compounds formed. I'm having a bit of trouble with certain compounds (specifically the second series of sodium hydroxides). Here is my work:



1. Na2CO3(aq) + H2SO4(aq) -> Na2SO4(aq) + CO2(g) + H2O

2. Na2SO3(aq) + H2SO4(aq) -> Na2SO4(aq) + SO2(g) + H2O(l)

3. NH4Cl(aq) + H2SO4(aq) -> UNSURE

And then the same thing only with NaOH....


1. Na2CO3(aq) + NaOH(aq) --> UNSURE
2. NaSO3(aq) + NaOH(aq) --> UNSURE
3. NH4Cl(aq) + NaOH(aq) --> UNSURE

Any assistance anyone can provide me with in regards to this topic, will be more then appreciated. Thank you very much for reading. :)
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Offline AWK

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Re: Predicting the outcome of a series of reactions.
« Reply #1 on: October 07, 2009, 01:33:04 AM »
N
Quote
H4Cl(aq) + H2SO4(aq)
-> (NH4)2SO4 (aq)+ HCl(g) when conc. sulfuric acid is used or when heating, even with diluted one.
1. Na2CO3(aq) + NaOH(aq) --> UNSURE
2. Na2SO3(aq) + NaOH(aq) --> UNSURE

 no reaction

NH4Cl(aq) + NaOH(aq) --> UNSURE
Ammonia is a weak base, NaOH is the strong base. What happens?


AWK

Offline Geddoe

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Re: Predicting the outcome of a series of reactions.
« Reply #2 on: October 07, 2009, 08:13:12 AM »
N
Quote
H4Cl(aq) + H2SO4(aq)
-> (NH4)2SO4 (aq)+ HCl(g) when conc. sulfuric acid is used or when heating, even with diluted one.
1. Na2CO3(aq) + NaOH(aq) --> UNSURE
2. Na2SO3(aq) + NaOH(aq) --> UNSURE

 no reaction

NH4Cl(aq) + NaOH(aq) --> UNSURE
Ammonia is a weak base, NaOH is the strong base. What happens?



Thanks a lot!  :)
In regards to this last question, my hypothesis is:

NH4Cl(aq) + NaOH(aq) --> NaCl(s) + NH4OH(aq) which will further decompose into NH3(g)+H2O(l)+NaCl(aq). Is this correct?
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Offline AWK

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Re: Predicting the outcome of a series of reactions.
« Reply #3 on: October 08, 2009, 10:31:50 AM »
Quote
NH4Cl(aq) + NaOH(aq) --> NaCl(s) + NH4OH(aq) which will further decompose into NH3(g)+H2O(l)+NaCl(aq). Is this correct
better
NH4Cl(aq) + NaOH(aq) --> NaCl(aq) + NH3(aq) + H2O(l)
AWK

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