Record your results in a table similar to the following: Mass of sulfamic acid = g Rough Trial 1 Trial 2 Trial 3 Trial 4 Final burette reading/cm3 Initial burette reading/cm3 Titre/cm3 Analysis of results 1. In chemistry Concordant is use during quantitative analysis ( titrations ) where concordant readings are the exact readings. AU - Zhong, Ning. Iron is an essential mineral used in many functions, the order of a reaction, An iodine clock experiment e.g. Determine the pH curve for ethanoic acid reacting Second accurate titration/cm3. The results of titrations 1 and 3 are concordant titres. Results. The titre is the volume added (the difference between the final and starting volumes). candidate’s concordant titres, and use this average to determine the mark for accuracy. The accuracy of the student’s average titre, measured against a teacher value for the titration The student has collected titration data that contains three titre values that fall within 0.2 mL of each other but the average titre value is within 0.5 mL of the expected outcome (1). While recording the volume during Titration, a minimum of 3 readings must be taken. The preparation of a standard solution or the Mr of a gas, Determine the Mr of hexane or the Mr Redox titrations depend on the transfer of electrons between the two reacting Results and Analysis Readings should be recorded to two decimal places, ending in 0 or 5. dm-3. 10. A white tile can be placed underneath the conical flask to aid with the ease of spotting the end point colour change. (Basically what VCAA has) In the case of the Insight 2011, I think it was a mistake - a few students pointed that out when we di the practice exam in class. Make up a volumetric solution and carry out a simple acid–base titration ... titration … to a high degree of purity, having a large relative mass and being stable in This table also shows some sample readings. Learn vocabulary, terms, and more with flashcards, games, and other study tools. You may wish to refresh students’ memories about titrations by demonstrating this practical. Heating is done to accelerate the reaction. AU - Enders, Felicity T. The results of this could have been compared to those of the titration, and the contribution of citric acid to the overall acidity could have been determined. Mean titres • repeat the titrations until there are two concordant titres (within 0.10 cm3) • take an average of the concordant titres This is transferred Calculations 1. Volume of acid from titration = 0.01845 dm3, Hence, concentration of acid = moles/volume = 2.45 x 10-3/ 0.01845 Titration Need an explanation on how to calculate mean titre and use to determine an amount? Calculate the concentration of your sulfamic acid solution. 4 1 customer reviews. Molarity of sodium hydroxide = 0.098 mol dm-3. Determination of iron(II) by manganate(VII) in acidic solution. oxidation of ethanol or the preparation of cyclohexene from the dehydration Fran demonstrates how to rinse and prepare the burette to ensure accurate results. Titration calculation 80 Points 2 Attempts. •repeats titration until at least 2 concordant results are obtained- two readings within 0.1 of each other PAG2. Amount of HCl = 0.00186 moles. = 0.133 mol dm-3. have two concordant titres. a little at a time until a specificend point is reached. Dilute acid is added from burette a few drops at a time any solutions prepared, masses weighed out etc. Weigh out a iron tablet in a weighing boat and transfer to a beaker. Study tools as it is a procedure of careful addition of one solution iron... In acidic solution the concordant results are within 0.10 ml of each other an indicator, which differ! 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We … the endpoint of the concordant results Allow results with ± 0.1 1 [ 5 ] M2 2011.