Sulfuric Acid Production - Fertiliser

[Hooligan]

Those doing the sulfuric acid production, is ammonium sulfate = fertiliser?

Thanks.

[StringFever]

Yes it is a fertiliser!

[Hooligan]

Thanks!! =D

Also, another question, if nuclear fission releases energy, but it also needs temperature >100,000,000 degrees for it to react, is it endothermic or exothermic?

[Mao]

depending on what you are fusing.

fusion of hydrogen (or very light nucleus) is highly exothermic, but the activation energy is ridiculous.

fusion of heavy elements (such as Uranium) is highly endothermic.


As for fission, fission of lighter elements is highly endothermic, fission of heavy elements (such as uranium) is highly exothermic. The conditions required are nowhere near as high as fusion.

[StringFever]

depending on what you are fissioning.

fission of hydrogen (or very light nucleus) is highly exothermic, but the activation energy is ridiculous (as you mentioned, >100million degrees)

fission of heavy elements (such as Uranium) is highly endothermic.

Is that testable in VCELand? :S

[c23]

for the ammonium sulfate equation:
NH₃ + H₂SO₄ ----> (NH₄)₂SO₄

do you need to know the states? because every prac exam ive done, they haven't wrote in the states :S

[StringFever]

for the ammonium sulfate equation:
NH₃ + H₂SO₄ ----> (NH₄)₂SO₄

do you need to know the states? because every prac exam ive done, they haven't wrote in the states :S

Better to be safe than sorry - NH(g) + H2SO4 (l/aq) --> (NH4)2SO4(s)

Edit: Thanks /0

[Hooligan]

depending on what you are fissioning.

fission of hydrogen (or very light nucleus) is highly exothermic, but the activation energy is ridiculous (as you mentioned, >100million degrees)

fission of heavy elements (such as Uranium) is highly endothermic.

Oh, I see... thanks Mao.

So even though it requires ridiculous amounts of energy, its still considered to be exothermic? Confusing huh? So does it release more than it needs? 'Cause by the looks of it, it looks like it needs more energy than it releases, so wouldn't it be endothermic?

[/0]

Isn't ammonia usually a gas?

[Hooligan]

for the ammonium sulfate equation:
NH₃ + H₂SO₄ ----> (NH₄)₂SO₄

do you need to know the states? because every prac exam ive done, they haven't wrote in the states :S

Better to be safe than sorry - NH(s) + H2SO4 (l/aq) --> (NH4)2SO4(s)

*AGREES* (... unless it explicitly states not to state the states.   )

[StringFever]

Isn't ammonia usually a gas?

Oh dear God that was stupid of me!

[Mao]

for the ammonium sulfate equation:
NH₃ + H₂SO₄ ----> (NH₄)₂SO₄

do you need to know the states? because every prac exam ive done, they haven't wrote in the states :S

Better to be safe than sorry - NH(s) + H2SO4 (l/aq) --> (NH4)2SO4(s)

NH(s)?


2NH₃(g) + H₂SO₄(l) ----> (NH₄)₂SO₄(s)

Conc sulfuric acid is sprayed into a chamber filled with ammonia gas. This reaction is exothermic, hence any water present is evaporated by the heat of reaction. The product is a powder.

[Mao]

depending on what you are fissioning.

fission of hydrogen (or very light nucleus) is highly exothermic, but the activation energy is ridiculous (as you mentioned, >100million degrees)

fission of heavy elements (such as Uranium) is highly endothermic.

Oh, I see... thanks Mao.

So even though it requires ridiculous amounts of energy, its still considered to be exothermic? Confusing huh? So does it release more than it needs? 'Cause by the looks of it, it looks like it needs more energy than it releases, so wouldn't it be endothermic?

Fusion is the process by which the Sun generates energy, so it is highly exothermic.

However, our technology currently is not good enough to sustain a fusion process (it always ends prematurely), and the energy released does not outweigh the energy invested. If we can sustain a stable process, then the energy released will be greater than the energy put in. This is the reason why we don't use fusion to generate energy presently.

[c23]

for the ammonium sulfate equation:
NH₃ + H₂SO₄ ----> (NH₄)₂SO₄

do you need to know the states? because every prac exam ive done, they haven't wrote in the states :S

Better to be safe than sorry - NH(s) + H2SO4 (l/aq) --> (NH4)2SO4(s)

NH(s)?


2NH₃(g) + H₂SO₄(l) ----> (NH₄)₂SO₄(s)

Conc sulfuric acid is sprayed into a chamber filled with ammonia gas. This reaction is exothermic, hence any water present is evaporated by the heat of reaction. The product is a powder.

thanks guys

[Hooligan]

depending on what you are fissioning.

fission of hydrogen (or very light nucleus) is highly exothermic, but the activation energy is ridiculous (as you mentioned, >100million degrees)

fission of heavy elements (such as Uranium) is highly endothermic.

Oh, I see... thanks Mao.

So even though it requires ridiculous amounts of energy, its still considered to be exothermic? Confusing huh? So does it release more than it needs? 'Cause by the looks of it, it looks like it needs more energy than it releases, so wouldn't it be endothermic?

Fusion is the process by which the Sun generates energy, so it is highly exothermic.

However, our technology currently is not good enough to sustain a fusion process (it always ends prematurely), and the energy released does not outweigh the energy invested. If we can sustain a stable process, then the energy released will be greater than the energy put in. This is the reason why we don't use fusion to generate energy presently.

I see... very interesting... exothermic it is, then! Thanks again Mao.