Temperature (˚C) | Volume of NaOH used (mL) | | | | Titration 1 | Titration 2 | Average | 28 | 12.7 | 12.8 | 12.75 | 9 | 10.5 | 10.5 | 10.5 | 19 | 11.3 | 11.2 | 11.25 | 40 | 16.2 | 16.2 | 16.2 | 50 | 22.8 | 22.9 | 22.85 | Table 1: The volume of NaOH used in the titration at various temperatures. No. of moles of KHC4H4O6 = 1.45 g ÷ 188.177g/mol = 7.71 x 10-3mol Molarity of KHC4H4O6 before filtration = 7.71 x 10-3mol ÷ 0.1L = 7.7 x 10-2M No. of moles of NaOH: (0.07415M x 12.75) /1000L
Premium Solubility Thermodynamics Ion
Separation of a Carboxylic Acid from a Neutral Compound by Extraction Reference: Smith‚ Chapter 2 (Acids and Bases) Introduction Carboxylic acids and phenols are two families of organic compounds that contain carbon‚ hydrogen and oxygen‚ and also react with water to yield an excess of hydronium ions over hydroxide ions. Pure water has a pH of 7‚ which means it has a hydronium ion concentration‚ [H3O+] of 10-7 M (M = molarity‚ moles/Liter). The hydronium ions in pure water come from the self-ionization
Premium Acid Acetic acid PH
determine the concentration of sulphuric acid (H2SO4) using titration technique CHEMICALS NaOH solution‚ approximately 0.2 M‚ dilute sulphuric acid of unknown molarity‚ phenolphthalein APPARATUS Burette. Burette clamp‚ retort stand‚ 20 mL volumetric pipette‚ pipette filter‚ 250 mL conical flask PROCEDURES 1) The burette was washed with distilled water and then rinsed with about 5-10 mL of NaOH solution‚ running the second rinsing through the burette tip. The burette was clamped to the
Premium Titration Sodium hydroxide PH indicator
Molarity Worksheet #1 identifiera ____________________ 1. What does molarity mean? Number of moles of solute 1 liter solution 2. What is the molarity of a solution that contains 4.53 moles of lithium nitrate in 2.85 liters of solution? 4.53 mol LiNO3 = 1.59 M LiN03 2.85 L soln 3. What is the molarity of a solution that contains 0.00372 moles hydrochloric acid in 2.39 x 10-2 liters of solution?
Premium Mole Oxygen Chemistry
Electrolytic Conduction Introduction Electrical conductors can be classified into two types: (1) electronic conductors and (2) electrolytic conductors. Solid and molten metals‚ semiconductors‚ and some salts are examples of electronic conductors. Conduction takes place in electronic conductors by direct migration of electrons through the conductor under the influence of an applied potential. Here the atoms or ions that compose the conductor remain stationary (except for vibrations about
Premium Chemistry Titration Electrolyte
used to catalyze reactions involving chemical species which are present in different phases. These types of reactions are known as a homogeneous two phase reactions and are usually very slow because the two primary reactants (in this case CHCl3 and NaOH) are in different phases. The reaction catalyzed in this experiment is the addition of a dichlorocarbene to cyclohexene. The dichlorocarbene must first be generated in solution and this is done using the strong base‚ 50% aqueous sodium hydroxide‚ with
Premium Sodium hydroxide Chemistry Sodium
session was 3.55). We then proceeded by adding 25 mL of 0.5 M of HCl. The pH values after this addition are 1.56 and 1.34. We filled a cleansed biuret with 0.5 M NaOH solution. The main process begins with us closely monitoring changes in pH as we added NaOH from the biuret at 0.5 mL increments. We refilled the biuret with NaOH when it neared empty. We halted the titration process when both the pH stabilized and we reached a pH level range of 12-13. All data collected was graphed to visually
Premium Chemistry Experiment Molecule
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 was the release
Premium PH Solubility Hydrochloric acid
Trial 3 * * Initial volume of NaOH in the buret * 20 20 35 35 30 30 Volume of HCI in the flask 38 38 26 26 30 30 Volume of NaHO remaining at the end point 50 50 50 50 Part II Trial 1 Trial 2 Trial 3 50 50 Initial volume of NaOH in the buret 30 30 25 25 20 20 0.70 0.70
Premium
Mrs Trennor Research Assignment: The Chloralkali Industry The chloralkali process is responsible for the production of chlorine gas (Cl2)‚ sodium hydroxide (NaOH) hence the name chloralkali. The process is also responsible for the production of hydrogen gas (H2). These three substances are used to make products that are essential to people’s lives. The chloralkali process does have environmental impacts; however
Premium Chlorine Sodium hydroxide Electrolysis