• Igcse chem questions
     Name:_________________________________________ Answer all questions on the paper. 1. A student studied the effect of temperature on the rate of reaction between hydrochloric acid and sodium thiosulphate. The student mixed 50 cm3 of a sodium thiosulphate solution and 5 cm3 of hydrochloric...
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  • Open Ended Investigation – Energy Release Rates
    , which confirms the hypothesis originally stated. Catalyst on the rate of reaction Aim: To investigate the effect of copper on the rate of reaction between zinc and hydrochloric acid. Hypothesis: The copper will have a catalytic effect between the zinc and hydrochloric acid, causing the rate of...
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  • Speed of Chemical Reactions - Prac Report
    with copper sulphate solution. 2. Compare the speed of the reactions in the last two test tubes. Record your observations in the table Results |Reactants |Zinc and hydrochloric acid |Marble chips and hydrochloric acid | |Effect of...
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  • factors effecting reaction rates (chem lab)
    rate of reaction. For the particle size test, I observed that the powdered CaCO3 reacted faster with the hydrochloric acid that the marble chips. This is because more surface area was exposed and more of the CaCO3 was able to react with the hydrochloric acid than the marble chips. The temperature...
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  • Pdf Polluting
    rate of reaction for the reaction between ZnCO3 and HCl. If a student want to study the effect of temperature of HCl solution on the rate of reaction, the manipulated variable is A concentration of hydrochloric acid B temperature of hydrochloric acid solution C size of solid zinc carbonate D rate of...
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  • Pest
    faster with the acid than zinc did. As we observed during this practical we noticed the three molar acid of hydrochloric acid with the magnesium has more gas released so that means the rate of reaction was higher in fifth seconds. In the other hand we noticed that the one molar, two molar, and...
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  • ychbuvytcrxx 6fymkmp0jp89by
    '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...
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  • Activity Series of Metals
    protection must be used. Equipment: * Metal tongs * Bunsen Burner * Zinc * Lead * Magnesium * Iron * Tin * Aluminium * Copper * Splint * 50 Ml Hydrochloric acid solution * 8 Test tubes * Measuring Cylinder * Beaker Method: Part A: Reaction of...
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  • Chemistry, Rate of Reaction
    could) impact your life. Eg) Hypothermia OR create an analogy for the affect of temperature on the rate of reaction. Part 2: Affect of Concentration Designing an Experiment A) Design a simple experiment using the reaction of zinc with hydrochloric acid that will qualitatively investigate...
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  • OCR GCSE Chemistry Textbook C6 Chemical Synthesis
    used to describe any way of providing definite proof. Questions 3  pattern can be etched A onto a zinc plate using hydrochloric acid to react with the zinc, forming soluble zinc chloride, ZnCl2. Write a word equation and a balanced symbol equation for the reaction. 4 Magnesium...
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  • The Effect of Temperature on Rate of Reaction
    hydrochloric acid but when the acid is concentrated, the rate of reaction increases. Catalysts - A catalyst is a substance which speeds up the rate of reaction without itself...
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  • The End of the World
    can increase the rate of reaction. 7) Based on collision theory, explain how catalyst can increase the rate of reaction. 8) Explain why hydrochloric acid of 2.0 mol dm-3 is reacted faster with zinc compare to hydrochloric acid of 0.5 mol dm-3 . C. Synthesis 9) Hypothesis: The smaller the size of...
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  • The Fadl
    is reacted with dilute hydrochloric acid at a constant temperature. Explain why the rate of reaction is increased if the lumps are reduced in size...
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  • DETERMINATION OF THE THICKNESS OF ZINC
    mass of zinc removed after it is reacted with HCL, hydrochloric acid. Given the radius of a zinc atom, on the other hand, students can also calculate the thickness of the zinc coating in terms of zinc atoms. INTRODUCTION Objectives 1. To determine the thickness of zinc on a piece of galvanized...
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  • The Effect of Concentration of H2O2 on the Docomposition of Hydrogen Peroxide
    this reaction. Oxygen is given off much faster if the hydrogen peroxide is concentrated than if it is dilute. The reaction between sodium thiosulphate solution and hydrochloric acid This is a reaction which is often used to explore the relationship between concentration and rate of reaction...
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  • slkjfdlsk
    ) Which one of the following would NOT increase the rate of this reaction? a) Increasing the temperature of the reacting solutions. b) Increasing the concentration of sodium thiosulfate. c) Increasing the concentration of the hydrochloric acid used. d) Increasing the air pressure around the...
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  • Chemistry Past Paper
    the reaction between zinc lumps and hydrochloric acid. Hydrogen and a solution of zinc chloride are made. The diagram shows the apparatus they use. Look at the graph. It shows their results when 1 g of zinc lumps reacts with 20 cm3 of dilute hydrochloric acid. total volume of gas given...
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  • Ibchemistry
    Data Collection and Processing Aspect 1: Raw Data Quantitative data: 3.000±0.001g zinc and 20.0±0.5ml 2mol/dm3 hydrochloric acid are measured for each trial of the experiment. Water bath is used to create and maintain the initiate temperature of 40℃ for the reaction to occur. Afterwards...
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  • Testing the Reactivity of Metal
    to the published reactivity series. Materials : * Hydrochloric acid (1M) * Metals (sodium, calcium, magnesium, aluminium, zinc, iron, tin, lead, copper) * 9 test tubes * Test tube rack * Test tube holder * Retort stand * Bunsen burner * Beaker * Tripod * Heat...
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  • Flower
    ? Appearance of a cloudy second layer or emulsion 3o alcohols: immediate to 2-3 minutes 2o alcohols: 5 -10 minutes 1o alcohols: no reaction A. Lucas test Reactants Reagents Time taken Observations 2-methyl-2-propanol Lucas reagent (concentrated hydrochloric acid, HCl and Zinc chloride...
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