cm3 of a solution of hydrochloric acid. What is the molarity of the acid? 2. 25.0 cm3 of a 0.10 moldm-3 solution of sodium hydroxide was titrated against a solution of hydrochloric acid of unknown concentration. 27.3 cm3 of the acid was required. What was the concentration of the acid? 3. 10 cm3 of a solution of NaCl react with 15 cm3 of a 0.02 moldm-3 solution of AgNO3. What is the concentration of the NaCl solution in gdm-3? 4. 25 cm3 of a 0.1 moldm-3 solution of an acid HxA reacts with 75 cm3
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Scrub the magnesium strips with steel wool to clean out impurities. 4. Pour out approximately 310 mL of hydrochloric acid from the stock container. 5. Use a 50mL or 100mL graduated cylinder to measure approximately 50mL of hydrochloric acid. 6. Record the volume of hydrochloric acid. 7. Measure and record the initial temperature of hydrochloric acid. 8. Pour hydrochloric acid into the Styrofoam cup (the calorimeter) and add magnesium in. 9. Close the lid immediately with the
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Calcium Hydroxide Titrated with Hydrochloric Acid By: Juliana Kadiasi Signature__________________________________________ (Experimental team: Ashley Tsao‚ Sophie Alvarez‚ Catherine Hering) IB Chemistry HL B3 For: Mr. Ahmed. Belmir 15 September 2014 Criteria Aspect IA IA Total Design 1. Identified Problem & relevant variables 2. Procedure controls variables 3. Procedure & relevant sufficient data Data Collection & Processing 1. Precise & accurate
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zinc‚ an element‚ and hydrochloric acid‚ a compound‚ but combining a compound and an element is not synthesis‚ it is single replacement. We are taking zinc and hydrochloric acid and making zinc chloride and hydrogen‚ a single replacement‚ but what occurred during that replacement? The lab starts with a given amount of zinc and 10 milliliters of hydrochloric acid being placed in a test tube surrounded by cold water. The zinc then replaces the hydrogen in the hydrochloric acid‚ leaving the excess hydrogen
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chemical reactions include the concentration of reactants‚ temperature‚ surface area‚ the physical state of reactants‚ and a catalyst. This experiment regarding the factors that affect reaction rate tests the effects of increased concentration and temperature of the hydrochloric acid solution (HCl) and also the effect of increased surface area of magnesium metal (Mg). When glow sticks are immersed in a hot water bath‚ it is proven that they glow with greater intensity. This proves that an increased temperature has an effect
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accepted heat of reaction for the neutralization of hydrochloric acid with sodium hydroxide is −56.0 kilojoules per mole‚ determine the percent error of the experimental value that you calculated in Part II. Show your work. (experimental - actual value) / actual value × 100 % 4. Using the accepted values of the processes you’ve examined‚ would your estimation of the enthalpy change for the reaction of solid sodium hydroxide in aqueous hydrochloric acid change from the prediction you made in question
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eLearning 2009 Publication No. 91860 Rate of Reaction of Sodium Thiosulfate and Hydrochloric Acid Rate Laws Introduction The purpose of this demonstration is to investigate the effect of sodium thiosulfate concentration on the rate of reaction of sodium thiosulfate with hydrochloric acid. The reaction‚ which produces solid sulfur‚ will be followed by measuring the time needed for the reaction mixture to become opaque. The results will be analyzed graphically to determine the order of
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Molar hydrochloric acid Toluidine blue stain 2 watch glasses or small sample tubes Hollow glass blocks Pipettes Microscope slides and cover slips Pair of fine forceps Filter paper Microscope with magnifications of x100 and x400 Stop watch Method: 1. Firstly cut out about 1cm from several root tips of growing garlic roots. Choose root tips which are white and have rounded edges‚ not ones that are turning brown 2. Place the root tips in a hollow glass block containing 2cm of 5M hydrochloric acid solution
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Butanol Purpose: To test the reactions of primary‚ secondary‚ and tertiary alcohols with acid and with an oxidizing agent. Equipment and Materials: Chemical safety goggles Lab apron Protective gloves 3 test tubes Test-tube rack Eyedropper Dropper bottles containing the following Butan-1-ol Butan-2-ol 2-methylpropan-2-ol Potassium permanganate solution‚ KMnO4(aq) (0.01 mol/L) Concentrated hydrochloric acid‚ HCl(aq) (12 mol/L) *Alcohols are flammable and should be kept away for heat sources
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Hot water 7. Room temperature water 8. 1M hydrochloric acid (HCl) 9. 3 M HCl 10. Iron (III) chloride (FeCl3) 11. Sodium chloride (NaCl) 12. Calcium chloride (CaCl2 ) 13. Potassium nitrate (KNO3) 14. 0.3% hydrogen peroxide (H2O2) solution 15. 8 test tubes 16. Test tube rack 17. 3 250mL beakers 18. Alka Seltzer tablet 19. 3 pieces of zinc metal Procedure: Particle size 1. Have two test tubes in the test tube rack. Put 1M hydrochloric acid into both of these test tubes. 2. Take a scoop
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