chemistry coursework hydrochloric acid

GCSE Chemistry coursework. GCSE Chemistry coursework topics with sample answers Aqueous Chemistry (1711 essays) Acids & Alkalis, Solubility, Properties of Water Changing Materials - The Earth and its Atmosphere (203 essays) Changes to the Atmosphere, Geological Changes, Products from the Air/Rocks/Oil, The Reactivity Series Classifying Materials (285 essays) Atomic Structure, Bonding, Elements & Compounds Organic Chemistry (331 essays) Alcohols, Fuels, Alkanes & Alkenes Patterns of Behaviour (2491 essays) Rates of Reaction, Enzymes, The Periodic Table, Energy Transfer GCSE Chemistry coursework titles with sample answers Aqueous Chemistry Changing Materials - The Earth and its Atmosphere Classifying Materials Organic Chemistry Patterns of Behaviour.
Rates of reaction:- sodium thiosulphate + hydrochloric acid Length: 1444 words (4.1 double-spaced pages) Rating: Red (FREE)   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Rates of reaction:- sodium thiosulphate + hydrochloric acid Plan:- We must produce a piece of coursework investigating the rates of reaction, and the effect that changing one particular variable has on the reaction time. The rate of reaction is the time it takes one or more of the reactants to react or the time it takes to produce a new product from a chemical reaction. To work out the reaction time we use the formula. 1 divided by time taken for reaction There are five factors which affect the rate of a reaction, according to the collision theory of reacting particles: 1. temperature of solution, 2. concentration of solution, 3. pressure of gases in reaction, 4. surface area of reactants, 5. Catalysts. For my preliminary experiments I have chosen to investigate the effect temperature and concentration have on a reaction. I have chosen to investigate these reactants because the are the most practical for the lab and equipment that I have available to use also it would take to much time to prepare a solid in powdered and unpowdered form, and it is difficult to get accurate readings due to the inevitabilities of human errors, and as gas is mostly colourless it is difficult to gauge a reaction changing the pressure, and if a substance is added to give the gas colour, it may influence the outcome of the experiment. Similarly the use of a catalyst complicates things, and if used incorrectly could alter the outcome of the experiment. My preliminary experiments showed me that it would me more practical and time saving if I just altered the temperature of the solution as changing the concentration of the solution was very time consuming. However the preliminary experiments also helped.
Doc Brown's Chemistry KS4 science GCSE/IGCSE Revision Notes A BRAINSTORM on Rates of Reaction for chemistry coursework investigations-projects Ideas for coursework assignments or projects involving the rates or speed of chemical reactions and is a companion page to see also the DETAILED GCSE Revision Notes on the Factors Affecting the Rates of Chemicals which also has brief descriptions of experimental methods and equations, particle pictures and fully explains all the factors affecting the rate of a chemical reaction Advanced level chemistry theory pages for GCE/AS/A2/IB and adventurous GCSE students! and A few health and safety ideas on risk assessment AIM for a high investigation-project mark - you have nothing to lose for your assessment!  e.g. suppose you are investigating the effect of hydrochloric acid concentration on the rate at which the acid dissolves limestone (calcium carbonate) BUT you can use and extend these 'brain stormed' ideas to most rates of reaction coursework assignments e.g. The magnesium/zinc + acid reaction, you can investigate acid concentration and amount of metal and the zinc reaction is catalysed by copper and other ions in the acid). Decomposing hydrogen peroxide with a solid catalyst or soluble transition metal compound. Enzyme catalysed reactions e.g. decomposition of hydrogen peroxide solution by catalase (can tricky at GCSE level). The sodium thiosulphate-hydrochloric acid reaction, you can investigate the effects of temperature and concentration. (as far as I know sulphur formation is only catalysed acid) and these reactions get a mention here and there and don't forget to pre-study the rates of reaction revision notes, lots of theory and descriptions of experimental methods and graphs etc. WARNING: Your write-up must be your work produced from your study and your experiments. This web page is meant to teach you how to tackle an.
Class practical In this experiment sodium hydroxide is neutralised with hydrochloric acid to produce the soluble salt sodium chloride in solution. This solution is then concentrated and crystallised to produce sodium chloride crystals. Lesson organisation You have to decide if this experiment is suitable to use with different classes, and look at the need for preliminary training in using techniques involved in titration (see Teaching notes). What follows here assumes that teachers have judged the class to be capable of doing this experiment using a burette with reasonable expectation of success. Assuming that the students have been given training, the practical work should, if possible, start with the apparatus ready at each work-place in the laboratory. This is to avoid vulnerable and expensive glassware (the burette) being collected from an overcrowded central location. Stage 1 Filling the burette, measuring out the alkali into the flask, and titrating it until it is neutralised takes about 20 minutes, with false starts being likely for many groups. In practice it does not matter if the end-point is overshot, even by several cubic centimetres, but the aim is to find the proportions for a roughly neutral solution. Stage 2 Producing a neutral solution free of indicator, should take no more than 10 mins. Stage 3 Evaporating the solution may take the rest of the lesson to the point at which the solution can be left to crystallise for the next lesson. Watching solutions evaporate can be tedious for students, and they may need another task to keep them occupied – e.g. rinsing and draining the burettes with purified water. Apparatus Chemicals Eye protection Each working group requires: Burette (30 or 50 cm3) (Note 1) Conical flask (100 cm3) Beaker (100 cm3) Pipette (20 or 25 cm3) with pipette filler Stirring rod Small (filter) funnel (about 4 cm diameter) Burette stand.
My Shortlisted Essays Related Keywords No Related Keywords For this investigation I am reacting magnesium ribbon Mg with Hydrochloric acid HCl I am measuring the rate of reaction between the two, and to do this am measuring the hydrogen given off by the reaction.3 User(s) Rated! GCSEChemistry For this investigation I am reacting magnesium ribbon Mg. Words: 3186 Views: 1652 Comments: 0 For this investigation I am reacting magnesium ribbon Mg with Hydrochloric acid HCl I am measuring the rate of reaction between the two, and to do this am measuring the hydrogen given off by the reaction. Magnesium is a shiny silver coloured metal, an element with an atomic number of 12, which belongs to the group 2 alkali metal group; it therefore has only two orbiting electrons and is very unstable and reactive. Hydrochloric acid is a solution of hydrogen and chloride a colourless acidic gas in water, Hydrochloric Acid has a high acidity and therefore will react. tests with the gas syringe, if I would have been able to continue this experiment further I could have produced more average results and seen if my predictions for the 1 cm piece of magnesium was correct. We could have also varied the concentration of the acid more so, and used less or more acid to get more accurate results or results for different test situations, instead of changing the strength we could have changed the amount of acid, or the temperature of the acid, or try varying these together and see how they effect each other.  Become a member to continue reading this essay orLogin View Comments Hide Comments Add Comment Please login to your EssayBank account to add your comments on this essay. You might also be interested in. I will be investigating how. I will be investigating how the concentration of hydrochloric acid affects the rate of reaction between hydrochloric acid and magnesium ribbon.   GCSE Chemistry I.
docxGCSE CHEMISTRY RATES OF REACTION COURSEWORK11 PagesUploaded byAnjelina QureshiViews  connect to downloadREAD PAPERDownloadUploaded byAnjelina QureshiLoading PreviewSorry, preview is currently unavailable. You can download the paper by clicking the button above.