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  • Lead Acid Battery
    461 words
    Acids & Bases An acid is any compound that can respond to a base to form a salt. Also, it is a substance that generates the positive ion of the solvent where the acid is dissolved. A base is the opposite of an acid. It is a substance that eliminates the hydrogen ions (protons) from an acid and joins them through a chemical reaction. Sulfuric Acid Sulfuric acid is an extremely strong acid. Concentrated sulfuric acid is a strong dehydrating agent, which reacts violently with water. In aqueous solu...
  • Amount Of Zinc And Hydrochloric Acid
    465 words
    Zinc and Hydrochloric-Acid Written By Kahlil ZioneDate: 02/02/05 Abstract: We observed the reaction between zinc and hydrochloric acid and recorded it in a table and learned wether the percentage of zinc is effected by the amounts of both substances added to the solution. Introduction The purpose of this experiment is to determine if the amount of zinc and hydrochloric acid will effect the percentage of the zinc in the out coming solution. We are reacting zinc metal with hydrochloric acid to pro...
  • Unknown Acidic Solution And Concentration
    529 words
    Chemistry: Acid-Base Titration Purpose: The objective of this experiment were: a) to review the concept of simple acid-base reactions; b) to review the stoichiometric calculations involved in chemical reactions; c) to review the basic lab procedure of a titration and introduce the student to the concept of a primary standard and the process of standardization; d) to review the calculations involving chemical solutions; e) to help the student improve his / her lab technique. Theory: Titration was...
  • The Titration Of The Acid And Bases
    650 words
    Titration Problem: When adding acids and bases what is the titration of the two Research: Amounts of reactants and products in a reaction are commonly investigated in two ways in the lab, gravimetrically (by mass), and volumetric ally (by volume and concentration). Titration is the name we give to the process used to determine the volume of a given solution needed to react with a given mass or volume of a sample. We will use the quantitatively study a neutralization reaction, in a neutralization...
  • Average Molarity Of Permanganate Solution 2
    901 words
    Purpose: The purpose of this experiment is to determine the molarity of a permanganate solution through the use of red ox titration. Theory: The following are the reactions that take place in the experiment: Unbalanced: H 2 C 2 O 4 (aq) + MnO 4- (aq) CO 2 (g) + Mn 2+ (aq) H 2 C 2 O 4 Half-Reaction: H 2 C 2 O 4 (aq) 2 CO 2 (g) + 2 e- + 2 H+ (aq) MnO 4- Half-Reaction: 8 H+ + 2 MnO 4- (aq) + 5 e- Mn 2+ (aq) + 4 H 20 (l) Net Reaction: 5 H 2 C 2 O 4 (aq) + 6 H+ + 2 MnO 4- (aq) 10 CO 2 (g) + 2 Mn 2+ (...
  • Blue Litmus In The Other Petri Dish
    737 words
    What is the pH of the substance Controlled Comparison: During class, our instructor set up the same lab that we were doing with 2 solutions, both of which were known acidic or basic. He placed 2 ml of the known acid into 2 different test tubes, and 2 ml of the known acid into 2 different petri dishes. Then using forceps, he tested blue litmus paper in one petri dish, and red litmus paper in another. The blue litmus paper, after being dipped into the solution, turned red in reaction to the acidic...
  • Activity Of The H 1 Ion
    548 words
    Introduction: In 1909 S.P.L. Sorensen published a paper in Biochem Z in which he discussed the effect of H 1+ ions on the activity of enzymes. In the paper he invented the term pH to describe this effect and defined it as the -log [H 1+ ]. In 1924 Sorensen realized that the pH of a solution is a function of the 'activity' of the H 1+ ion not the concentration and published a second paper on the subject. A better definition would be pH = -log [aH 1+ ], where aH 1+ denotes the activity of the H 1+...
  • 577 Mg Of Vitamin Unknown 44 2
    744 words
    Vitamin C Content of Apple Juice Introduction Complete lack of ascorbic acid (a. k. a Vitamin C) in the diets of humans and other primates leads to a classic nutritional disease, scurvy. This disease was widespread in Europe during the fifteenth and sixteenth centuries, but it is rare today. Ascorbic acid is widely distributed in nature, but it occurs in extremely high concentrations in citrus and green plants such as green peppers and spinach. Ascorbic acid can be synthesized by all plants and ...
  • Acid's P Ka Values
    1,851 words
    Determination of An Unknown Amino Acid From TitrationAbstractExperiment 11 used a titration curve to determine the identity of an unknown amino acid. The initial pH of the solution was 1.96, and the p Ka " sound experimentally were 2.0, 4.0, and 9.85. The accepted p Ka values we refound to be 2.10, 4.07, and 9.47. The molecular weight was calculated to be 176.3 while the accepted value was found to be 183.5. The identity of the unknown amino acid was established to be acid, hydrochloride. Introd...
  • 3 H 2 O H Nh 3
    2,725 words
    CHEMISTRY 122 CHAPTER 17 NOTES CHAPTER 17 EXERCISES (THESE ARE NOT TO BE TURNED IN, BUT QUIZ QUESTIONS WILL BE TAKEN FROM THESE EXERCISES SO IT IS TO YOUR BENEFIT TO DO THEM): 2, 3, 5, 6, 8, 10, 13, 15, 16, 18, 19, 21, 23, 25, 27, 28, 29, 31, 33, 37, 39, 41, 43, 44, 47, 48, 50, 53, 57, 60, 63, 64, 67, 70, 71, 73, 75, 78, 80, 87, 95,102,112 Chemistry of Acids and BasesSvante Arrhenius (1884) developed a theory of acid-base reactions Arrhenius acid = substance that contains H and produces H+ ions ...
  • 1 Cm 3 Of Silver Nitrate Solution
    902 words
    'We are provided with 3 salts X, Y and Z which contain a different's-block element. We are to carry out the reactions listed below and report the observations and deductions in the table. 1. Heat about 0.5 g of solid X in a clean dry test tube and test the gas evolved with a glowing splint. Continue heating until there is no further change and allow the residue to cool. Observation Inference Lighted splint goes out when placed into test tube. Cannot be oxygen as the lighted splint would ignite a...
  • Copper Metal In Concentrated Nitric Acid
    588 words
    3 Cu + 8 HNO 3 - 3 Cu (NO 3) 2 + 2 NO + 4 H 2 O The balanced equation seen on the top is what you attain when you place copper metal in concentrated nitric acid. In this process the identifiable characteristics of the metal will be completely changed and a new substance, cupric nitrate, will be formed. Copper forms two series of chemical compounds: cuprous, and cupric. Cuprous compounds are easily oxidized to cupric, in many cases by simple exposure to air; cupric compounds are stable. When nitr...
  • Probe Into The Beaker Of Tap Water
    992 words
    TJ Gentile Bio lab 11/18/2003 Mrs. Trunfio Experiment 3: Acids and Bases Hypothesis: My Hypothesis is that Aspirin would be the Best buffer because it has a strong acid content and it May be able to withstand changes better. Materials Needed: -CBL System -TI Graphing Calculator -Venire pH System -Venire DIN adapter Cable -250- mL beaker -Various Biological Organisms -Various Non Biological Organisms -Graphical Analysis or graph paper -. 10 M HCI (ACID) with Dropper -. 10 M NaOH (Base) with Dropp...
  • Acid Ionization Constants And Buffer Solutions
    550 words
    Acid-Base Equilibria: Determination of Acid Ionization Constants Introduction: The purpose of this lab is to learn about acid ionization constants and buffer solutions. We will be determining the acid ionization constant by finding pH with pH meters. In part three we will prepare a buffer solution and then observe the change in pH as either an acid or base is added. Data: Discussion: The majority of this experiment was focused on determination of Ka, or the acid ionization constant. To find Ka w...

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