Date: March 10th & 17th Introduction： The purpose of this lab is to observe the titration between acid and base‚ and calculate the morality of unknown solution base on the volume required to reach equivalence point and stoicheiometry. There are two groups of experiments. The first one is the reaction between nitric acid and sodium hydroxide which is a reaction between strong acid and strong base‚ so‚ theoretically‚ the pH value of the the mixture of these two solution at the equivalence
Premium Base PH Acid
SCIENCE TITRATION SIMULATION ! TRIAL 1:! This reaction was strong acid vs. strong base! ! Known: Acid! Unknown: Base HCl NaOH Volume! 25.00 mL 18.66 mL Molarity 0.1396 M Uknown Name! Indicator ! Methyl Orange! Turned red when mixed with the acid solution.! After adding 18.66 mL of base‚ turned orange. After having added the correct amount of base to the acid solution mixed with indicator‚ we can calculate the concentration of the base solution
Premium Acid PH indicator Acetic acid
formula Type Experimental pH 1 Deidre Acetic Acid 0.1M HC2H3O2 Weak Acid 3.03 3.03 2 Acetic Acid 1M HC2H3O2 Weak Acid 2.59 2.54 3 Hydrochloric Acid 0.5M HClStrong Base 0.85 0.90 4 Jonah Nitric Acid 0.1M HNO3 Strong Acid 2.14 2.14 5 Sodium Acetate 1M NaC2H3O2 Weak Base 9.42 9.42 6 Potassium Dihydrogen Phosphate 0.1M KH2PO4 Weak Acid 5.47 5.47 7 Andy Potassium Hydrogen Phosphate 0.05M K2HPO4 Weak Base 7.71 7.73 8 Ammonium Chloride 0.2M NH4Cl Weak Acid 4.65 4.67 9 Sodium Hydroxide 0.1M NaOHStrong
Premium PH Base Acid dissociation constant
Ka1 from the initial pH 7 c. Ka1 from the pH at the first halfway point 8 d. Ka2 from the pH at the first end point 8 e. Ka2 from the pH at the second halfway point 9 3.3 H2A Calculations a. Molecular weight of the acid 9
Premium UCI race classifications Acetic acid Acid dissociation constant
Introduction In quantitative chemical analysis‚ acid - base reactions are often used to provide a basis for various titration techniques. The equivalence points of acid - base titrations can be estimated from the colour change of chemical indicators‚ such as phenolphthalein‚ methyl red‚ methyl orange and so on. The choice of an indicator suitable for a particular titration requires a detailed knowledge of the chemical properties of the acid and base. This difficulty can be avoided by using physical
Premium PH Acid Sodium hydroxide
State College has affected the watershed‚ along with how human land use and the area’s lithology potentially affects the creek’s alkalinity‚ which would change whether the creek is able to support its ecosystem. Using digital titrators and sulfuric acid‚ the samples collected from Spring Creek were titrated to determine the alkalinity of the water‚ and see if the stream needs to be rehabilitated‚
Premium Titration PH Buffer solution
conclusion? (A) (B) (C) (D) The hydrocarbon must be unsaturated. The hydrocarbon contains single bonds only. The hydrocarbon must contain a double bond. The hydrocarbon must contain a triple bond. 2 4. A student diluted a solution of a strong acid by mixing 10 mL with 90 mL of water. If the original
Premium PH Acetic acid Sulfuric acid
buffer at pH 7 was used. 60.97g of KH2PO4 (acid) and 20.42g of K2HPO4 (base) were weighed out for use. Data 25mL of DIH2O in 100mL beaker had pH = 7.40. After one drop of 0.50M HCl was added to the beaker‚ pH dropped to 3.08‚ and the change in pH was -4.32. After one drop of 0.50M NaOH‚ the pH jumped to 10.3‚ and the change was 2.9. pH of 25mL of created buffer solution = 6.15 Volume of HCl Added to 25mL of Buffer Solution | pH | Concentration of Acid After Addition | Concentration of Conjugate
Premium PH Acid dissociation constant Buffer solution
LIDE Learning Center‚ Inc. 6539 Isabel‚ Leyte Synthesis of Aspirin An Investigatory Project Presented to: Edmundo A. Quiñones Chemistry Teacher In Partial Fulfillment of the Requirements In Science and Technology III (Chemistry) Presented by: Kenneth Ivan P. Durano Cyrill Val G. Lozano March 6‚ 2010 APPROVAL SHEET This investigatory project entitled “The Synthesis of Aspirin” requirement for Science and Technology III (Chemistry) has
Premium Acetic acid Aspirin Acetic anhydride
added yet and the solution’s pH equates to the number of H+ ions originally present in the analyte. At the pre-equivalence point‚ the titrant is now added. For this experiment‚ NaOH‚ a strong base‚ was added to KHP‚ a weak acid. With the addition of a strong base to a weak acid‚ a phenomenon similar to that of buffers occurs‚ and the solution initially resists drastic pH changes as backed up by the results of the experiment. At the post-equivalence point‚ since the solution was already neutralized
Premium PH Acid dissociation constant Acid