A digital scale‚ a centrifuge‚ two (2) test tubes‚ 4.0 mL of 5.0% NaHCO3‚ micropipette (glass with rubber suction top)‚ a stirring rod‚ and a vial. A 50 mL beaker‚ 2 x 1.0 mL of 6.0 M HCl‚ pH paper‚ a vacuum chamber‚ a test tube rack‚ scooper‚ ice bath‚ hot water bath‚ hot plate‚ Hirsche funnel‚ and a rubber tube are all necessary to perform the
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Analysis of Soda Ash and Carbonate-Bicarbonate Mixture Submitted: February 27‚ 2013 Department of Chemical Engineering‚ Faculty of Engineering University of Santo Tomas España‚ Manila Abstract A standard acid solution like HCl can be used as titrant for the analysis of both soda ash and a carbonate-bicarbonate mixture. In the analysis of soda ash‚ the volume needed to neutralize the soda ash is used to compute for its alkalinity‚ in this experiment we obtained a 17.6 % alkalinity with an error
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position: NaCH3COO‚ HCl‚ HCN‚ NaOH‚ NH3‚ NaCN‚ KNO3‚ H2SO4‚ NH4Cl‚ H2SO3‚‚ NaHCO3‚ Na3PO4 and CH3COOH. In order of increasing pH: Here are my predictions: ACIDS - H2SO4 – - HCL – - H2SO3 – Weak Acid; - CH3COOH – Weak Acid; - NH4Cl – Weak Acid; - HCN- Weak Acid; NEUTRAL - KNO3 – This is neutral BASES - NaCH3COO – This is a weak base; - NaHCO3 –Weak Base;
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Acid Ion – Induced Dipole & London Dispersion Forces Class B (Basic) Compounds Aniline Hydrochloric Acid Ion – Dipole & London Dispersion Forces Class A (Acidic) Compounds Benzoic Acid NaOH Ion – Induced Dipole & London Dispersion Forces NaHCO3 Ion – Induced Dipole & London Dispersion Forces Phenol NaOH Hydrogen Bonding‚ Ion – Dipole & London Dispersion Forces Write the balanced chemical equations for solute-solvent combinations that are formed due to chemical reactions. Compound
Free Hydrogen Oxygen Ethanol
ºC Density g/mL Hazards Panacetin na 2.014 g na na na Harmful if swallowed or inhaled. DCM (35 mL + 5 mL +5 mL) 84.93 g/mol 45 mL na -97 1.33 Harmful by skin contact and eye and skin irritant 5 % NaHCO3 na 30 mL na 132 Approx. Causes serious eye irritation 6 M HCl na 2 mL na -70 Approx. Very corrosive and can destroy many clothing materials Procedure: Part A 2.014 g of Panacetin was measured and put inside a 125 mL Erlenmeyer flask. 35 mL of Dichloromethane (DCM)
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each solution in that position: NaCH3COO‚ HCl‚ HCN‚ NaOH‚ NH3‚ NaCN‚ KNO3‚ H2SO4‚ NH4Cl‚ H2SO3‚ NaHCO3‚ Na3PO4 and CH3COOH. In order of increasing pH: H2SO4: This is because the first hydrogen is strong and completely ionizes and the second is weak and ionizes very minutely. It is also a lower pH than HCl because the second hydrogen has a smaller amount of of ionization. HCl: Strong acid with 100% complete ionization
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two drops of NaHCO3 was combined with two drops of HCl-CO2. The results were observed and recorded. In column 1 of row B; two drops of HCl was combined with two drops of BTB. The results were observed and recorded. In column 1 row C‚ two drops of NH3 was combined with two drops of BTB. The results were observed and recorded. In column 1 row C; two drops of NH3was combined with two drops of BTB. The results were observed and recorded. Next‚ in column 1 row D‚ two drops of HCl was combined with
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Reactions Formula MW equivalence MP (ºC) Density (g/mL) C9H8O4 180.16 1 135 -- NaHCO3 84.01 1 50 2.20 C9H7NaO4 202.14 1 --- H2O 18.02 1 0 1.00 CO2 44.01 1 -56.56 0.720 Formula MW equivalence MP (ºC) Density (g/mL) C9H7NaO4 202.14 1 --- HCl 36.46 1 114.17 0.00149 C9H8O4 180.16 1 135 -- Formula MW equivalence MP (ºC) Density (g/mL) C10H14N4 190.24 1 236.3 1.23 HCl 36.46 1 159 0.00149 C10H15ClN4 226.71 1 --- Formula MW equivalence MP (ºC) Density (g/mL)
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Experiment 3 Objectives Separation by Solvent Extraction To separate a mixture consisting of a carboxylic acid and a neutral compound by using solvent extraction techniques. Introduction Frequently‚ organic chemists must separate an organic compound from a mixture of compounds‚ often derived from natural sources or products of synthetic reactions. One technique used to separate the mixture compounds is called extraction. Extraction is a process
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KATE FITZPATRICK YEAR TWELVE BIOLOGY TERM ONE _(www.happycow.net)_ "TO TEST THE EFFECTS OF ANTACIDS ON PEPSIN’S ABILITY TO DIGEST PROTEIN." _CONTENTS_ 1.0 Abstract Pg 2.0 Introduction · 2.1 Aim · 2.2 Background Information · 2.3 Hypothesis PG · Pg · Pg · pg 3.0 MATERIALS · 3.1 Equipment · 3.2 Chemicals PG · Pg · Pg 4.0 METHOD · 4.1 Variables · 4.2 Procedure PG · Pg · Pg 5.0 RESULTS · 5.1 Sample calculation · 5.2 Tables · 5.3 Graphs · 5.4 Photos PG · Pg · Pg · Pg
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