Similar question asked before but since this is 6 marks as many people mentioned id mention theCovers up the bad joke with a question :L...
The optimal conditions for the production of Ammonia is that of around 300 degrees and around 200 atmospheric pressure.
Le Chatlier's principle states that a change in pressure, concentration or temperature would cause the equilibrium to shift in the direction that minimises the disturbance. An increase in pressure would cause the equilibrium to shift to the side with the least number of moles. Thus as pressure is high the equilibrium shifts to the right increasing the yield of ammonia. However, there is a specific amount of strain the pipes can hold thus the pressure is not increased to high. A decrease in temperature, due to the systems exothermic nature, would cause the equilibrium to shift to the right. However, due to the Kinetic theory this will slow down the rate of reaction and rate of production of Ammonia. Thus in order to get a compromise higher temperature is used. Thus showing that the suitable conditions are around 300 degrees and 200 times AP
Elements higher in the activity series are more reactive; physically, what this means is that the element is more likely to want to give up its valence electrons. In a salt solution, e.g. AgCl, what is actually present in the solution is Ag+ and Cl- ions: the silver has given its one valence electron to chlorine. The element silver has a measurable tendency, or 'desire' to want to do this: this is its reactivity (silver actually has quite a low reactivity: it doesn't mind keeping its valence electron, whereas a element with high reactivity wants to get rid of its valence electronSimilar question asked before but since this is 6 marks as many people mentioned id mention theCatalyst which needs to be monitored to make sure its providing the surface area needed for the reaction. Also dispensers using perfect mole ratios of hydrogen and nitrogen.
Talk about safety, economic factors and reaction rate and youre done
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Guys i dont get the displacement BS. Elements higher in the activity series displace ones that are lower ? dont understand plz explain
We would begin to see solid silver (in my example) forming; either as a powder in the solution which falls to the bottom, or it may deposit/accumulate on the solid piece of metal that we insert into the solution in the first place (in my example, the silver depositing itself on the solid piece of sodium we put in. Theoretically. In reality, for my example, the sodium would actually react with the water in the solution to form NaOH, but ignore that). The latter usually occurs, from my experience (depositing on the solid piece of metal).
He's asking how your able to predict if a metal ion will displace a metal of another species. If you have Cu2+ in solution and Zn metal, just add the standard reduction potentials of copper reduction and Zn oxidation and see if the reaction will be spontaneous or not.
YES this is my question i cant determine what displaces what D: Can you explain without using words such as displace and all this bs just say shit like:
More positive/higher "reduction" potentials means more likely to reduce (gain electrons). If you have Cu ions in solution, it has a higher reduction potential than Zn(s), which intuitively means that Zn(s) is more likely to oxidise and give up it's electrons. (Zn has lower reduction potential or higher oxidation potential).
So in other words in the activity series if a metal all the way at the top is dipped into a solution all the way from the bottom nothing will happen or would the ions build up on the metal thats being dipped in ?
The Frasch process is the extraction of sulfur and consists of three pipes forced down to the underground sulfur deposits. Superheated steam (which is pressurised to 160 degrees) is inserted into the far right pipe, directly into the sulfur, causing it to melt. Pressurised/compressed air is forced down the far right pipe, which then pushes the molten sulfur and water foam through the middle tube back to the surface. The mixture is then cooled and the sulfur readily separates from the water.
I would mention the emulsion that occurs but other than that sounds legit
What's emulsion?
Its when to immiscible substances such as sulfur and water mix
So how would I word my answer to mention emulsion?
....The superheated temperature causes the sulfur to melt and form an emulsion with water which is easily seperated as it cools down at the surface....
Usually the question wouldn't give you that much detail-so you can just consider possibilities, i.e. many mines involves extraction of sulfide ores-which can produce acidic residues. Although arguably the original question would have been worded better since 'safeguarding' environment is quite ambiguous, and the main purpose of AAS is a tool, rather than a safeguard in the normal understanding of the word-because it is ultimately up to us, as humans-to decide what we do with the data we gain from AAS-if we do anything about the environment at all.
