Hypothesis: The petri dish that is exposed to the most light and with the NaHCO3 solution will have the best results and the petri dish that is kept in the dark will have the poorest results. Material and Methods: 1. Get 4 deep petri dishes and label them 1‚ 2‚ 3‚ and 4. Fill dish 1 about 2/3 full with distilled water. Fill the other 3 about 2/3 full with 0.2% NaHCO3 solution. Set these aside for later. 2. Pour about 100 ml of 0.2% NaHCO3 solution into a flask with a side arm. 3. Get three or four spinach
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all liquid to evaporate‚ we found the mass of this new substance‚ which was NaC2H3O2. Data: Mass of Evaporating Dish During Dish Mass Empty 51.18g With NaHCO3 and acetic acid 54.36g After evaporating 52.36g Mass of Reactants/Products Mass (g) NaHCO3 1.25g NaC2H3O2 1.18g Calculations: Reaction Equation: NaHCO3 (s) + HC2H3O2 (aq) ----> CO2 (g) + H2O (l) + NaC2H3O2 (s) Theoretical Yield: 1.22 grams NaC2H3O2 Percent Yield: 1.18g/1.22g x 100 = 96.7% yield Errors:
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equilibrium‚ based on the quantities of the starting materials you used and a value of 4.2 for the equilibrium constant. B.) Estimate the mass of isopentyl acetate that was lost 1) during the distillation. Assume the ester’s solubility in aqueous NaHCO3 is about the
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Shook well to ensure the uniformity of the solution. 5. The contents were transferred to the storing bottle and it was labeled 1M Na2CO3 solution. 3. Preparatiion of 1 M NaHCO3 solution Molecular mass of NaHCO3 = 79.64g Mass of beaker = 71.24g Mass of NaHCO3 = 8.40g 1. 8.4g of NaHCO3 was weighed in a dry beaker. Small amount of distilled water was added and the salt was dissoleved. 2. The contents of the beaker were transferred to a clean volumetric flask of
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Ocean County College Department of Chemistry Chem 180 Lab 5: Ionic Reactions Submitted by Abstract: The purpose of this experiment is to work with aqueous solutions of ionic substances. Aqueous solutions are those solutions in which water is the solvent. When ionic substances are dissolved in water‚ the ions separate and become surrounded by water molecules. The focus of this experiment is on precipitates. The goal of this experiment is to study the nature of ionic reactions‚ write balanced
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[PARVATIBAI CHOWGULE COLLEGE(H.S.S)-MARGAO-GOA] Chemistry chart Std-XII Name______________________________________________ Class____________________________________ Div__________________ Roll No___________ Batch No_______ 1 [PARVATIBAI CHOWGULE COLLEGE(H.S.S)-MARGAO-GOA] Chemistry chart Std-XII VOLUMETRIC ANALYSIS REDOX TITRATIONS Experiment No:- 1 Date:--------------- Aim:- You are provided with two solutions as follows. Container A: -----------------M/N Stock Solution of Hydrated
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was also one of the last three solutions that I found the name of. H2SO4 is a strong base‚ and a PH test revealed that it had a very low PH of 1. Also already knowing that solution 6 was NaHCO3 and solution 8 was Na2CO3‚ I was also able to confirm solution 2 was NaOH by the following reactions: H2SO4(aq) + 2 NaHCO3(aq) ⇒ Na2SO4(aq) + 2 CO2(g) + 2 H2O(l) H2SO4(aq) + Na2CO3(aq) ⇒ Na2SO4(aq) + CO2(g) + H2O(l) These reactions show that the fizzing that occurred while performing precipitate reactions
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(l) Decomposition of dinitrogen tetroxide: N2O4 (g) 2NO2 (g) Decomposition of calcium carbonate: CaCO3 (s) CaO (s) + CO2 (g) Non-Arrhenius acid/base reaction: Gaseous hydrogen chloride and ammonia react: HCl (g) + NH3 (g) NH4Cl (s) IONISATION of strong and weak acids: Hydrochloric: HCl (g) + H2O (l) H3O+ (aq) + Cl־ (aq) Nitric: HNO3 (l) + H2O (l) H3O+ (aq) + NO3- Sulfuric: H2SO4 (l) + 2H2O (l) 2H3O+ (aq) + SO42־ Ethanoic: CH3COOH (s) + H2O (l) H3O+ (aq) + CH3COO־ (aq) Sources of sulfur
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Synthesis of Banana Flavor CHEMISTRY 200L EXPT 02 PAGE 01 - 11 Gerome B. Vallejos*‚ Ellis Mika C. Trino‚ Jahn Camille B. Valdez‚ Ariza Yamashita Department of Biological Sciences‚ College of Science Group 11 Corresponding author: gerome_911@yahoo.com Abstract The purpose of this experiment was to synthesize isopentyl acetate via Fischer esterification reaction between acetic anhydride and isoamyl alcohol‚ using concentrated sulfuric acid as a catalyst. This reaction is characterized by the combining
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General Science Questions and Answers No. Question Answer 1 The theory of relativity was propounded by Albert Einstein 2 The principal metal used in manufacturing steel is Iron 3 An altimeter is used for measuring Altitude 4 Oology is the study of Bird Eggs 5 Radioactivity was discovered by Henry Bacquerel 6 The metal used in storage batteries is Lead 7 The instrument used to measure the relative humidity of air is Hygrometer 8 Barometer was invented by Torricelli 9 The unit of power is Watt 10
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