CP4001: ANALYTICAL & PHYSICAL CHEMISTRY | | Formal Report of the Quantitative Determination of Sulphate by Gravimetric Analysis (Experiment 4) | Maryjo Lee Wei Min 1111107 DBS/FT/1A/01 | (A) Synopsis The amount of sulphate is determined quantitatively as barium sulphate by gravimetric analysis. This determination consists of slowly adding a dilute solution of barium chloride to a hot‚ unknown sulphate solution which is slightly acidified with concentrated hydrochloric acid. A white
Premium Solubility Chemistry Hydrochloric acid
Greener Brominations Abstract In this experiment‚ trans-stilbene was brominated and debrominated with the use of three methods: bromination with pyridinium tribromide‚ bromination with hydrogen peroxide and hydrobromic acid‚ and debromination with zinc. The yields of parts A‚ B‚ and C are as follows: 68.6 %‚ 54.6 %‚ and 55.9 %. Introduction In the chemical process of bromination‚ an alkene is halogenated with bromine. Solvents that are typically used include methylene chloride and carbon
Premium Acid Oxygen Solvent
composition of the label (50% paracetamol‚ 40% aspirin and 10% sucrose) matches that of the percentage composition of the powder by following 10% ranges of each component in the powder. I am going to do this via a number of methods including vacuum filtration‚ heating‚ extraction and evaporation. Experimental method: The experiment was done in three parts: firstly the separation of sucrose‚ then the separation of Aspirin and the isolation of the unknown component. 1. Separation of Sucrose Weight
Premium PH Chemistry Hydrochloric acid
Preparation and Recrystallisation of Aspirin Contents Page Synopsis iii 1 Introduction 1 1.1 Objective 1 1.2 Background 1 2 Theory 1 3 Procedure 2 3.1 Materials 2 3.2 Preparation 2 3.3 Recrystallisation 3 3.4 Determination of Melting Point 3 4 Results and Calculation 4 4.1 Mass 4 4.2 Percent yield 4 4.3 Melting Point 4 4.4 Appearance 4 5 Discussion 5
Premium Acetic anhydride Acetic acid Aspirin
little yellow tent to them. A lot of crystals were formed in the round bottom flask. The crystals were accidently dropped into the ice cold water forming a milky white substance‚ but this did not harm or contaminate the ending results. After vacuum filtration and being washed with the petroleum ether‚ the crystals turned pure white. Results and Discussion: The anticipated result of this experiment was to identify one of four conjugated dienes. The melting point of the adduct unknown was found
Premium Diethyl ether Carbon Temperature
with CPO and prevent numerous bubbles formed. Then‚ the mixture is heated until it reaches 150 °C and allows stirring vigorously for an hour until bleaching is completed. Filtration After bleaching is done‚ the spent adsorbent is separated from the bleached palm oil (BPO) by filtration using filter paper no.50. Filtration will be carried out in the oven at the temperature of 80 °C for a period of 22 hours. Once the BPO is filtered‚ the spent adsorbent is collected for regeneration. Soxhlet extraction
Premium Laboratory glassware Analytical chemistry Water
separate C10H8‚ NaCl and SiO2‚ and determine their percentages in the mixture. Since the mixture was not chemically combined‚ they can be separated by physical means. One can use a variety of techniques such as sublimation‚ selective dissolution‚ filtration or evaporation. As a result‚ the mixture contained 9.51% of C10H8‚ 16.2% of NaCl‚ and 60.40% SiO2. Introduction A mixture is a combination of two or more pure substances in which each substance retains its own composition and properties. One easily
Premium Chemistry Evaporation Water
B) ml/min C) mM/sec D) mM/min 5) Which of the following is NOT a passive process? 5) _______ A) osmosis B) facilitated diffusion C) vesicular transport D) filtration 6) In this activity‚ the solutes were transported through the dialysis membrane by _______. 6) _______ A) simple diffusion B) osmosis C) active transport D) facilitated diffusion
Premium Diffusion Osmosis Molecular diffusion
deals essentially with water. Tonicity is what makes the cells either shrink or grow depending on the environment it is placed at‚ it is an osmotic pressure and it is influenced by the different concentrations of solutes in and out of the cell. Filtration is what is used to remove solid particles and they can be removed by passing through a liquid and gas. The information above is very important because it is exactly what everything in this lab will be about. It explains in detail what every single
Premium Osmosis Diffusion Membrane biology
spongy bone 16. Each of these reflexes is mediated by the brainstem except? Scratching 17. What type of collagen makes up the PDL? Type I collagen 18. Where is the majority of ECF located? Interstitial fluid 19. Where is the majority of the glomerular filtrate reabsorbed? Proximal tubule 20. What is sucrose made from? Glucose and fructose 21. Which of these causes increased secretion of bicarbonate from the pancrease? Secretin 22. Which of these diseases is characterized by patchy inflammation
Premium Diabetes mellitus Cell Lung