Equipment: 1. Safety goggles. 2. Droppers. 3. Red Litmus paper. 4. Blue Litmus paper. 5. pH paper. 6. Well plate. 7. Micro spatula. Materials: 1. Zinc. 2. Magnesium. 3. Iron. 4. Copper. 5. HCL. 6. HC₂H₃O₂. 7. NaOH. 8. Phenolphthalein. Procedure: Part A: 1. Add five drops of HCL‚ HC₂H₃O₂‚ and NaOH to different depressions in the well plate. 2. Place a drop of each solution onto a piece of red litmus paper and record observations. 3. Place a drop of each solution onto a
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Procedure: See pages 209-211 Heath Chemistry Laboratory Experiments Data and Observations: Table 1 Equilibrium Involving Thymol Blue REAGENT ADDED STRESS (ION ADDED) COLOR OBSERVATION DIRECTION OF EQUILIBRIUM SHIFT HCl (Step 3) HCl (Step 4) NaOH (Step 5) NaOH (Step 6) Table 2 Equilibrium Involving Thiocyanatoiron (III) Ion REAGENT ADDED STRESS (ION ADDED) OBERSERVATION DIRECRTION OF EQUILIBRIUM SHIFT KCl (test tube B) Fe(NO3)3 (test tube C)
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cup with lid‚ thermometer‚ two 50.00cm3 measuring cylinders‚ stopwatch‚ three 80cm3 beakers‚ dropper Variables: Manipulated variable: Type of acids used In this experiment‚ type of acids used would be manipulating variable. Different acids such as HCl or CH3COOH are added to NaOH respectively and measure the increase in temperature respectively. Responding variable: Temperature‚ T Responding variable will be the temperature. First‚ we have to measure and record the initial temperature of the sodium
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reacting with a base‚ hence‚ an acid-base titration. eq.1 – Hydrochloric Acid + Sodium hydroxide Sodium Chloride + water HCl(aq) + NaOH(aq) NaCl(aq) + H2O(l) In this investigation the latter reaction was carried out‚ having hydrochloric acid (HCl(aq)) as the analyte in the conical flask and sodium hydroxide (NaOH(aq)) as the titrant in the burette. The analyte was also designated as the standard solution
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Changing the Rate of Reaction PART 1: PARTICLE SIZE Question: How does changing the particle size of marble (CaCO3) affect the rate of reaction when it is added to hydrochloric acid (HCl)? Hypothesis: If I change the particle size of marble to test how to change the rate of a chemical reaction‚ than the chemical reaction with the smallest marble particles will produce CO2 the quickest because the larger the surface area‚ the more place the hydrochloric acid will have to collide with the marble
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measure the amount of gas from two reactions. We will then compare our data to the predicted amount which will we will calculate based of the Law of conservation of Mass and Ideal Gas Laws. Methods Materials Thermometer CaCO3 Kim Wipes 1 M HCl (aq) Mg Ribbon Quantitative balance Pressure sensor GLX Machine Syringe with white connectors Tygon Tubing 125 mL flask with one-hole stopper 50 mL graduated cylinders Procedure Record the Temperature and convert into K Determine the
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To investigate how does the concentration of Hydrochloric acid affect the rate of reaction? Outline I aim to discover how different concentrations of Hydrochloric acid influence the rates of reaction. In order to carry out this investigation I have decided to use marble chips‚ which I will vary the sizes as powder‚ small chips and large chips. I will also be changing the concentration‚ the different concentrations are as follows 0.2m‚ 0.5m‚ 1m‚ 1.5‚ 2m. I have chosen these concentrations as they
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between strong and weak electrolytes. In this experiment‚ a weak electrolyte‚ phenol is used‚ and the change in enthalpy is endothermic‚ ΔH=q=25.3kJ/mol. The first part of this experiment involves the neutralization of strong electrolytes. 40 mL of 2.0 M HCL was used to neutralized 50 mL of 2.0 M NaOH. Both the solutions were mixed in the calorimeter and the temperature was recorded after 2 seconds until it reaches maximum‚ then every 10 seconds for one minutes‚ and finally every 30 seconds
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measurement‚ acid-base titration‚ chloride-ion electrode analysis‚ and flame testing. The sample had a greater concentration of chloride ions‚ no measurable CaCo3 ‚ and lower than standard moisture content. It was contaminated with KCl and likely HCl ionic solids. Introduction Soil is a vital component of any environmental network. It provides the basis for life for any environment. There are many factors that determine what life comes from soil such as texture of the soil‚ topsoil composition
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C6H5COONa(aq) + HCl(aq) C6H5COOH(s) + NaCl(aq) Upon completion of this experiment students will gain experience using common extraction techniques such as vacuum filtration‚ as well as familiarity with common calculations used in chemistry‚ such as mass measurements and percent yield. Description of Procedure: 2.00 g of sodium benzoate was dissolved in 10.0 mL of H2O. 7.0 mL of HCl was added to the solution and a pH of 2 (similar to stomach acid) was reached. Upon addition of the HCl‚ a white
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