Original post by anonymous56754
^^
thank you!
thank you!
My first input is that the reaction is a special metathesis reaction between a salt and a strong acid.
Then tell me where you get stuck.
Bye,
Sandro
Original post by anonymous56754
^^
thank you!
thank you!
Probably NH4(HSO4) and NH4Cl
Though based on pKa’s, it’s possible you’d get H2SO4 and NH4Cl, but I’d think you’d need the HCl to be pretty much pure
Original post by anonymous56754
^^
thank you!
thank you!
There will be no reaction.
Original post by TypicalNerd
Probably NH4(HSO4) and NH4Cl
Though based on pKa’s, it’s possible you’d get H2SO4 and NH4Cl, but I’d think you’d need the HCl to be pretty much pure
Though based on pKa’s, it’s possible you’d get H2SO4 and NH4Cl, but I’d think you’d need the HCl to be pretty much pure
I personally think that the formation of NH4(HSO4) is only possible with H2SO4 according to the following reaction:
(NH4)2SO4 + H2SO4 = 2 (NH4)HSO4
Sandro
Original post by charco
There will be no reaction.
To state your reply above, have you calculated Gibbs free energy equation?
Sandro
ammonia gas (NH₃) and water (H₂O)
Original post by ameliawarwicker
ammonia gas (NH₃) and water (H₂O)
Hello ameliawarwicker!
My understanding is that (NH4)2SO4 reacts spontaneously with HCl to form NH4Cl and H2SO4. As I mentioned in my reply #1, this double displacement reaction occurs spontaneously under standard conditions, resulting in the formation of a strong acid and a salt.
The reaction proposed by you, which I consider to be less spontaneous under standard conditions, could be endothermic and require an input of energy to break the bonds of (NH4)2SO4 and HCl to form NH3 and H2O.
But where does the chlorine go?
Sandro
(edited 3 weeks ago)
Original post by Nitrotoluene
I personally think that the formation of NH4(HSO4) is only possible with H2SO4 according to the following reaction:
(NH4)2SO4 + H2SO4 = 2 (NH4)HSO4
SandroIf you look at the relevant pKa values, the second pKa value of sulphuric acid is about 2, which makes it a much weaker acid than HCl. It should in theory protonate quite easily to give the bisulphate ion in this case. I suppose it really depends a lot on what the concentrations of the reagents used are.
Whilst it is true that NH4(HSO4) can be synthesised that way, it isn’t reliable as it actually forms a lot of (NH4)3H(SO4)2
(edited 3 weeks ago)
Original post by ameliawarwicker
ammonia gas (NH₃) and water (H₂O)
Had it been a strong base like NaOH added to a solution of an ammonium salt, yes, water and ammonia would form.
However, it’s a strong acid being added to a solution of ammonium sulphate, so realistically the most probable thing that will happen is the formation of ammonium bisulphate and ammonium chloride (of course depending on the concentrations of the reagents used and the stoichiometry)
Original post by Nitrotoluene
To state your reply above, have you calculated Gibbs free energy equation?
Sandro
Sandro
You could make an argument in terms of ΔG, but imo pKas are probably sufficient (HCl: ~ -7, H2SO4: ~ -3, HSO4^-: ~ 2)
From these values, HCl is in theory strong enough to fully protonate the sulphate ion, though in practice, it’s more likely it’ll protonate it once in aqueous solution as H2SO4 usually dissociates into H3O^+ and HSO4^- in aqueous solution, hence my suggestion that you get a mixture of ammonium bisulphate and ammonium chloride
(edited 3 weeks ago)
thank you everyone for the replies, from reading this, I think its probably ammonium sulfate ammonium chloride? This was part of an as mcq question:
Ammonia is a colourless gas that is produced by the Haber process. Which statements about ammonia are correct?
1 An ammonia molecule has three bond pairs and one lone pair of electrons.
2 If ammonia is bubbled into water the pH of the solution will increase.
3 Ammonia gas can be made by warming ammonium sulfate with aqueous hydrochloric acid
I know for certain statements 1 and 2 are correct but wasn't very sure about statement 3 because I had not come across the reaction. Please could I have some tips on how I could work out the products (in this case I know the products because I have been told but for future questions where I man not be familiar with the reaction?)
Thank you!
Ammonia is a colourless gas that is produced by the Haber process. Which statements about ammonia are correct?
1 An ammonia molecule has three bond pairs and one lone pair of electrons.
2 If ammonia is bubbled into water the pH of the solution will increase.
3 Ammonia gas can be made by warming ammonium sulfate with aqueous hydrochloric acid
I know for certain statements 1 and 2 are correct but wasn't very sure about statement 3 because I had not come across the reaction. Please could I have some tips on how I could work out the products (in this case I know the products because I have been told but for future questions where I man not be familiar with the reaction?)
Thank you!
Original post by anonymous56754
thank you everyone for the replies, from reading this, I think its probably ammonium sulfate ammonium chloride? This was part of an as mcq question:
Ammonia is a colourless gas that is produced by the Haber process. Which statements about ammonia are correct?
1 An ammonia molecule has three bond pairs and one lone pair of electrons.
2 If ammonia is bubbled into water the pH of the solution will increase.
3 Ammonia gas can be made by warming ammonium sulfate with aqueous hydrochloric acid
I know for certain statements 1 and 2 are correct but wasn't very sure about statement 3 because I had not come across the reaction. Please could I have some tips on how I could work out the products (in this case I know the products because I have been told but for future questions where I man not be familiar with the reaction?)
Thank you!
Ammonia is a colourless gas that is produced by the Haber process. Which statements about ammonia are correct?
1 An ammonia molecule has three bond pairs and one lone pair of electrons.
2 If ammonia is bubbled into water the pH of the solution will increase.
3 Ammonia gas can be made by warming ammonium sulfate with aqueous hydrochloric acid
I know for certain statements 1 and 2 are correct but wasn't very sure about statement 3 because I had not come across the reaction. Please could I have some tips on how I could work out the products (in this case I know the products because I have been told but for future questions where I man not be familiar with the reaction?)
Thank you!
Yeah, I agree that 1 and 2 are true, but 3 is false.
Ammonia reacts with acids to form ammonium ions. Ammonium ions do not react further with acids as they have no available lone pairs left to protonate (though the anion may react with the protons from the added acid, which most probably does happen in this case).
In this case, an acid is being added to something and you have to ask yourself whether that something is itself a base. If it is, then more often than not, you should get the conjugate acid of the base and the conjugate base of the acid.
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