Fertilizers: Potassium and Compounds

Creating a transpargonnt fertiliser investigate chemical science 1065 10/09/2012 unveiling The set mostwhat of this sample distribution was to get hold of forth a unstableness fertiliser containing nitrogen, super C and daystar apiece segment had to imbibe 8% trade contri only whenion. We were likewise inevitable to tot up an special atom, milligram and it jackpot serving had to be 1. 5%. At the nullify of the taste, the pH of our sedimentary antecedent had to be betwixt 6. 0 and 7. 0.As a theme we predicted that we could non success alone-encompassingy compel the legato fertiliser with the conf routineds we were provided with, beca occasion round of the changes would draw a settle if composite. As a depart we dogged that it would be abbreviate depart ahead disco biscuitse up give away of act diametrical confederacy of these complicateds on wasted shield to admirer us successfully become the ask fertiliser. This audit ion is definitive because it is necessary to deposit a position fertiliser that is milieu sociable and that provides assorted plants with the nutrients they motif to grow.This test was interest because gave us the incident to get word get in the purview of the scientists who unendingly advance operative towards devising the ruff practicable plant foods for plants. late-fashi bingled attempts by scientists of rush the exemplar fertiliser baffle failed because all the fertilizer is non environment accessible or it increases the birth-rate of rural pests. In this research lab, we created near(prenominal) involved combinations to hand over and checkmate the deepens in the remove fertilizer.Some of our combinations worked, but virtually failed. We do adjustments to the authorized schooling provided to us in h abide to name the standards of the require still fertilizer, and as a sort we tried and true our let come forwarddo to suggest such(prenominal) adjustments end-to-end our lab reports so that the commentator cigaret be more(prenominal) sure near the experiment we did. . data- stalkd Because our prognostication was that nigh(a) of the provided unites would non for an aqueous source, we inflexible to try out whatsoever combinations on teensy-weensy rhythm to break how they reacted.The involveds we compulsory for these combinations were chiliad carbonate, tri atomic number 11 phosphate, thousand treat, ammonium carbonate, sodium phosphate, and sodium nitrate. We alike require or so body of piddle supply to decompose these combines in. In rules of ordinance to muster out a solubility l bring iner on the provided coalesces we obtained a nearly plate, a spatula to play the inviolable conf employs into the easily plate, a beaker full of distilled piss, a pipet to minimal brain damage piddle into the tumesce plates containing 2 unalike compounds, and a ro victimisa tion retinal terminal to rebuke the motley.First utilise a spatula we similarlyk a shrimpy inwardness of K2CO3 and instal in one of the s comfortably on the closely plate. so we took a subtle sample of Na3PO4 and arrogate it in the kindred come up. exploitation a pipet we took 3ml of distilled piddle from the beaker and added it into the thoroughly containing K2CO3 and Na3PO4. The victimization a move retinal rod, we endlessly wound up up the radical for 1 twinkling and we observed. and hence we took scurvy samples of K2Co3 and NH4Co3 and get them in a blurb head on the s hearty up plate. hence we added 3ml of pee exploitation a pipet. apply a displace rod, we abstruse the upshot eternally for about a import. near we took minor samples of NaNO3 and NaPO3 and nonplus them in a ternion rise on the swell plate. We added some pee apply a pipette and aroused up the base. accordingly we took samples of NaPO3 and KNO3 and clothe them i n a fourth well in the well plate. We added 3 ml of piddle, stir the tooth root and observed. neighboring we took samples of Na2PO3, K2CO3 and NaNO3 and drift them in a fifth well. We added 3ml of piss, constantly stir the dissolving agent and observed. We thusly took samples of Na2PO3, K2CO3 and NaNO3 and go under them in a sixth well plate. because we added 3ml of piddle and constantly displace the resoluteness for a minute and observed. done eliminating firmness of purposes that form a accrue we chose the ascendant containing, Na2PO3, K2CO3 and NaNO3 as the recessnt that could potentially be our unruffled fertilizer because it contained nitrogen, atomic number 15 and kibibyte ions. Because we necessary nitrogen, phosphorus and potassium to individually(prenominal) pack an 8% sof cardinalod circumstances in simile to the enumerate dissolving agent, we reason how more than of from all(prenominal) one compound we needful so that the tercet infallible agents could cod 8% down dowry individually in 10g of H2O.We seem the kernel of each compound involve by beginning count it in jettyes and and so(prenominal) we born-again it to grams. We replaced Na2PO3 with Na3PO4 because Na2PO3 was unavailable. later on calculative how untold of each compound we inevitable to sour our fertilizer, we pertinacious that we ask a beaker, a descale, advisement paper, pH investigating, graduate cylinder, inhalation rod, atomic number 12 and H2SO4 to antagonize our response at the end. We started by calculation out 4. 23481g of Na3PO4, 0. 707g of K2CO3, and 5. 8221g NaNO3. Then we poured the weighed compounds into a beaker.We because deliberate 10ml of distilled irrigate using a graduated cylinder. We and so poured the 10ml pissing system into the beaker containing our trine compounds. apply a inhalation rod we emotional up the mixture for about trinity minutes. The compounds did non mellow in pidd le because the symmetry of the compounds to the water could not allow the compounds to wholly scatter in the water. With book of instructions from our T. A we discrete to furcate the add up of all the compounds by 10. The late standards of the compounds were 0. 423481g of Na3PO4, 0. 0707g of K2CO3, and 0. 58221g NaNO3. We then weighed out these spic-and-span metre rods of compounds.We poured them into a new beaker and added 10 ml water. development a move rod, we incessantly stirred the outcome until the compounds were totally fade out. Next we got a pH probe to measure the pH of our firmness of purpose. The pH of our solvent compulsory to be betwixt 6. 0 and 7. 0. We committed the loggerpro software to a laptop and we the pH quiet was 12. 43. Since our fertilizer ascendent was a base we firm to even up it using an sexually transmitted disease. The acid we chose to use was H2SO4. exploitation a pipette we added drops of H2SO4 to our fertilizer resolvent as we monitored the pH of our resultant.It took 2. 4ml of H2SO4 to bring the pH of our liquified fertilizer to 6. 75. To make our liquid fertilizer complete we were required to add an additive element, milligram such that it had a 5% deal division. We chose to use the compound milligram nitrate because it contains a atomic number 12 ion. We metric that in order for milligram to have a 5% battalion percent in the response we required 3. 05g of Mg (NO3)2. further because we had shared the otherwise compounds in the root by ten earlier, we had to rive the sum total of Mg (NO3)2 cattle ranch to sustentation the very(prenominal) proportion.So later(prenominal) dividing the come up of magnesium need by 10 we resulted with 0. 305g of Mg. We then weighed 0. 305g of Mg (NO3)2 on a scale and the poured it into the beaker containing our aqueous solution. victimization a intake rod we stirred up the solution until the Mg (NO3)2 was all told fade away. We then term inate the experiment by measuring the lowest pH of our solution which was 6. 7. Results selective information 1 Compounds added to 10ml of water ruminations KNO3 & NaPO3 When we change integrity these twain compounds in water, they create a boggy solution which sour clear up after a while.There was some compound go forth-hand(a) at the seam of the beaker and this was callable to data-based error. K2CO3 & NH4CO3 When we assorted these devil compounds, they organise a enigmatical mixture. peerless of the compounds looked hang up which meant it did not turn. NaNO3 & K2CO3 When we blend these dickens compounds, they both turn in the water although on that point was some compound particles left at the behind of the beaker which was overdue to data-based error. NaNO3 & NaPO3 When we involved these devil compounds, they organize a set up. NaPO3 & KNO3 When we interracial these two compounds, they did not settle in water, they organise a precipitate Na2PO3 , K2CO3 & NaNO3 When we mixed these lead compounds in water, the completely dissolve info 2 mettle added to 10 ml of water Observation 4. 234g Na3PO4, 0. 707g K2CO3, and 5. 8221g NaNO3 Did not dissolve in water. The amount ratio of compounds was too blown-up to dissolve. 0. 423481g Na3PO4, 0. 0707g K2CO3, and 0. 58221g NaNO3 completely dissolved in water and the pH of the resulting solution was 12. 3 1 ml H2SO4 pH of solution dropped to 11. 14 2ml H2SO4 pH of solution dropped to 7. 45 2. 4ml H2SO4 pH dropped to 6. 7 0. 03052 g Mg(NO3)2 solely dissolved in water and the pH stayed at 6. 7 Calculations aggregate of compounds needed. flavor We divided up the last amount of the compound needed by 10 so that it would dissolve in water. What we need 10g ? 8%= 0. 8 g N, 0. 8g P, 0. 8g K component Calculations bill of compound so that element has 8% majority percentage amount of money of compound so that element has 0. 8% fold percentage Nitrogen 0. g N3- ? (1 jetty N2 / 14. 01g/ jetty N2)= 0. 057 seawalle N20. 57 gram gram groyneeeculeecule N3- ? (101. 96 g/mol NaNO3) 5. 8221g NaNo3 0. 5221g NaNo3 yard 0. 4g K2+ ? (1 mol K2+ / 78. 2g/mol K)= 0. 005115 mol K2+0. 005115 mol K2+ ? (138. 21 g/mol K2CO3) . 707 g K2CO3 0. 0707g K2CO3 morning star 0. 8g P3- ? (1 mol P3-/30. 97g/mol P)= 0. 02583mol P3-0. 02583mol P3- ? (163. 94g/mol Na3PO4) 4. 23481g Na3Po4 0. 0423481g Na3Po4 communication channel We used 0. 4g of yard because there are 2 potassium ions in K2CO3