My teacher gave us these dot points on what is in our exam. Ive covered most of them but i'm left with some im not 100% sure on. Can someone please help me. It will be greatly appreciated
- Nuclear Reactors
- Bromine Test
- Treatment of Wastewater
- Esterification
- Production of Transuranic elements.
My trials is tomrrow lol. This help will be awesome
Thank you
Im not sure what there would be about nuclear reactors. All i think u would need to know is that they bombard uranium 238 with neutrons to make isotopes of americium, neptunium and plutonium. u will need reuations for those; theyre not hard to find or remember.
The bromine test is just about putting bromine water (its red - brown) into 2 test tubes and getting cyclohexane and cyclohexene or hexane and hexene into the 2 tubes. The solution in the tube with the alkene will decolourise, because of the reactivity of the double bond in the alkene. A reaction of cyclohexene and bromine water would look something like this.
C6H10 + Br2 + H2O --> C6H10BrOH + HBr
Treatment of wastewater can come through microscopic membrane filters (which remove solids, dissolved solids, ions, bacteria, ...), chlorinaion to kill microbes, filtration to remove rocks and twigs, flocculation (by adding alluminium hydroxide to coagulate fine dissolved particles), sand filtering and/or adding sulfuric acid to break down organic matter.
Esterification is done by having a reaction between an alkanol and an alkanoic acid to produce an ester and water. Reflux is used so it is safer, no voltaile gasses can escape and so that hotter temps can be used. Concentrated sulfuric acid is used to dehydrate the produced water and sway equilirbium to the yield.
Transuranics are elements greater than 92. Pu, Np and Am are made in a reactor but others such as curium are made by firing B, He or C atoms at uranium in a particle accellerator.
now that ive types all that out, why r u doin this when ur HSC is next year?
