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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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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from the dichloromethane layer‚ in which it is insoluble‚ to the aqueous layer‚ in which it is soluble. The unknown component will stay behind in the solution and can be isolated by evaporating the solvent from the dichloromethane solution. Adding HCl to the aqueous solution restores aspirin as an insoluble white solid. In the third experiment‚ the identity of the unknown component of Panacetin will be purified. Purification is necessary because the separation procedure
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