"Spectrophotometric determination of ascorbic acid concentration in an unknown solution" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 48 of 50 - About 500 Essays
  • Good Essays

    Introduction Extraction is a purification technique used in organic chemistry to separate compounds from a mixture of two or more compounds. There are three different extraction techniques: liquid-liquid extraction‚ solid-liquid extraction and chemically active extraction. All three types of extraction follow the same principle. Organic molecules dissolve in organic solvents and polar molecules dissolve in aqueous solvents. This phenomenon is observed because of the intermolecular forces between

    Premium Solubility Solvent Chemistry

    • 2064 Words
    • 9 Pages
    Good Essays
  • Good Essays

    Acids And Bases Lab Report

    • 2757 Words
    • 12 Pages

    Acids & Bases: Reactions‚ Standardizations‚ & Titrations Experiments 21 & 22 Experimental Overview: The procedure for this experiment was carried out as instructed in the laboratory manual‚ Experiments in General Chemistry‚ 4th ed.‚ S.L. Murov‚ Experiment 21‚ Acids and Bases: Reactions and Standardizations‚ and Experiment 22‚ Acids and Bases: Analysis. There were modifications made by the instructor to dilute the 6M NaOH to 0.1M in 300mls

    Premium Chemistry Acid Sodium hydroxide

    • 2757 Words
    • 12 Pages
    Good Essays
  • Better Essays

    Acid- Base Titration Lab

    • 742 Words
    • 3 Pages

    Acid-Base Titration and Volumetric Analysis The purpose of this experiment is to determine the [NaOH] of a solution by titrating it with standard HCl solution‚ to neutralize a known mass of an unknown acid using the NaOH solution as a standard‚ to determine the moles of NaOH required to neutralize the unknown acid‚ and to calculate the molecular mass of the unknown acid. Procedure: Part A: Standarized 0.10M HCl solution and unknown NaOH solution were poured into two beakers. The burets

    Free PH indicator Titration Concentration

    • 742 Words
    • 3 Pages
    Better Essays
  • Satisfactory Essays

    Acid/Base Balance

    • 485 Words
    • 2 Pages

    Exercise 10 Acid/Base Balance NAME 1. Match each of the definitions in Column A with the appropriate description in Column B. Column A Column B F 1. pH E 2. acid D 3. base A 4. acidosis B 5. alkalosis C 6. carbon dioxide a. condition in which the human body’s pH levels fall below 7.35 b. condition in which the human body’s pH levels rise above 7.45 c. mixes with water in the blood to form carbonic acid d. substance

    Premium PH Carbon dioxide

    • 485 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    to find out how does the concentration of a saline solution affect the movement of the solvent molecules. Before the experiment‚ it was predicted that the saline solution in baggies would remain inside‚ without mixing with the water‚ and that the mass would not change. Throughout the experiment‚ the saline solution was added into the baggie‚ it was discovered that a small portion of the saline solution would leave the bag. In the baggie that has 0.2 percent concentration of sucrose‚ it’s initial

    Premium Chemistry Water Solution

    • 332 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Direction and concentration gradients Bradley Benton ABSTRACT In this experiment‚ we will investigate the effect of solute concentration on osmosis. A semi‐permeable membrane (dialysis tubing) and sucrose will create an osmotic environment similar to that of a cell. Using different concentrations of sucrose (which is unable to cross the membrane) will allow us to examine the net movement of water across the membrane. INTRODUCTION A major determinant of diffusion in a biological system is membrane

    Premium Management Psychology Supply chain management

    • 916 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    What Is Acid Rain

    • 350 Words
    • 2 Pages

    What is acid rain? Rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm‚ typically to forests and lakes. What chemicals make rain acidic‚ and how does it happen? Besides water‚ and carbonic acid (from carbon dioxide dissolved in the rain droplets)‚ the primary components of acid rain are sulfuric acid‚ which comes from sulfur dioxide derived from the burning of coal‚ and nitric acid‚ which from nitrogen emissions. Where do these chemical come from?

    Premium PH Carbon dioxide Acid

    • 350 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Identify Unknown Microbes

    • 550 Words
    • 3 Pages

    NTRODUCTION Often in the study of microbiology‚ the need to identify an unknown microbe may arise. This aids in the recognition of which microbes are harmful or pathogenic as well as those that may be beneficial to us in some way. This report will detail how a similar project was performed in order to identify two unknown micobes using the techniques that were learnt during the course of the semester. We embarked on the project with the knowledge that we would have to identify a Gram(+) as well

    Premium Bacteria Microbiology Organism

    • 550 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    08 X 1022 ions C. Solutions and Their Concentrations 1. Molar Concentration or Molarity – Number of moles of solute in one Liter of solution or millimoles solute per milliliter of solution. 2. Analytical Molarity – Total number of moles of a solute‚ regardless of chemical state‚ in one liter of solution. It specifies a recipe for solution preparation. 3. Equilibrium Molarity – (Species Molarity) – The molar concentration of a particular species in a solution at equilibrium. 4. Percent

    Premium Mole Concentration Amount of substance

    • 920 Words
    • 4 Pages
    Satisfactory Essays
  • Powerful Essays

    Unit Plan on Acids and Bases

    • 6550 Words
    • 27 Pages

    Plan On Acids & Bases May 25‚ 2006 Table of Contents I. General Objectives Page 3 II. Learning Outcomes Page 4 III. Assessment‚ Grading & Resources Page 5 IV. Tending to different Learning styles Page 7 V. Schedule Page 8 VI. Appendix 1 Page 20 Acids and bases Unit plan Grade 12 General Objectives: ▪ Introduce pH‚ acid and base definition ▪ Discuss acid‚ base‚ strong

    Premium PH Acid Acid dissociation constant

    • 6550 Words
    • 27 Pages
    Powerful Essays
Page 1 42 43 44 45 46 47 48 49 50