Weak base

    Page 1 of 50 - About 500 Essays
  • Natural Indicators Lab Report

    Natural Indicators Lab; a Study in pH Levels Using Green Cabbage Introduction- pH is the concentration of hydrogen in a substance. It is the scale used to tell how acidic or basic a solution is. The normal pH scale goes zero to fourteen. Zero to about six indicates that the solution is an acid. If the solution is closer to zero it makes it a stronger acid, but if the solution is closer to seven than it is a weak acid. If a solution has a pH of seven then it is neutral. A pH of eight to fourteen indicates that the solution is a base. The farther the pH level is from seven the stronger the base. If the solution has a pH close to seven that indicates that it is a weak base. To determine the pH of certain substances one will use an indicator. An indicator is a dye…

    Words: 1228 - Pages: 5
  • Analysis Of Ka And Pkb

    DETERMINATION OF pKa AND pKb USING ACID-BASE TITRATIONS Introduction Acid-base titrations can be used to determine pKa of a weak acid and pKb of a base. A weak acid and a weak base incompletely dissociate in water. For this reason, the concentration of hydrogen ions (H+) and hydroxide ions (OH-) depend on equilibrium coefficients of acid (Ka) and base (Kb). Equation 1 shows the chemical dissociation equation of a weak acid. Furthermore, Equation 2 describes the equilibrium constant of a weak…

    Words: 1229 - Pages: 5
  • Phenolphthalein Chemistry Lab Report

    The reaction of phenolphthalein reacting with sodium hydroxide consists of C20H14O4+ NaOH → NaKC8H4O4 (aq)+ H2O(l) Phenolphthalein is used as an indicator in this reaction because it changes color when a solution reaches a pH of around eight, or in other words the endpoint of a solution. It also allows us to see a physical change, thus resulting in a more accurate measure of how much was titrated. Citric acid is a weak acid, making it best titrated by using a strong base, such as sodium…

    Words: 1233 - Pages: 5
  • Zinc Elements Lab

    magnetic attraction was observed when in contact with a magnet. Zinc had a shiny appearance with a light gray color and the strips of zinc added to solution were approximately 5 cm. When zinc was tested with water there were no noticeable characteristics of a reaction occurring, such as bubbling or a color change. When zinc was added to the weak acid H2SO4, at first there was no noticeable reaction, however,…

    Words: 1009 - Pages: 5
  • Equivalence Point Lab Report

    solution should be a faint pink color. If the color is too dark of a pink that means that it is overly titrated. The independent variable is the amount of base being added to the solution. The dependant variable is the indicator. The constant variable is the acid which is in the flask. When the solid acid dissolves to form ions, 1 mole of H+ ions are produced for every mole of acid being used. Molarity is used to calculate moles per liter of solution. The most dangerous part of this lab is…

    Words: 1071 - Pages: 5
  • Unknown Solutions Lab Report

    solutions were obtained in addition to a spot plate and pH test paper. An expectation matrix was constructed. The pH of each solution was measured and labeled from a strong base to a very strong acid. Then, react one of the unknown solution with all of the others and note any visible reaction (change in color or formation of precipitate) that occurs. After that, some the solutions might be identified throughout the…

    Words: 454 - Pages: 2
  • Identifying Acid Values

    Those solutions who possess pH values less than that of 7 is considered as acids, those with pH values greater than 7 are known to be bases, while those having pH equal to 7 is identified as neutral substances (Petrucci, 2011). Identifying its electrolytic property also helps to characterize the given solutions. Strong electrolytes, such as strong acids and bases and salts are known to fully dissociate its ions in the solution, making it a good conductor of electricity. On the other hand, the…

    Words: 431 - Pages: 2
  • Differences Between Acids And Bases

    Introduction: Acids and bases are often described using the Bronsted-Lowry theory which states that acids are proton donors, while bases are proton acceptors (Thorne, 78). This means that an acid has additional H+ ion(s) that can be given, whereas a base lacks these ions and will accept them. Acids and bases can further classified as strong or weak. A weak acid, such as HF, will not ionize completely, meaning that only some of the H+ ions will be lost. A strong acid will however, will release…

    Words: 901 - Pages: 4
  • Acid Base Titration Report

    ACID-BASE PROPERTIES OF SODIUM CHLORIDE, SODIUM FORMATE AND AMMONIUM CHLORIDE INTRODUCTION The objective of this experiment is to examine the definitive characteristics of acids and bases by investigating the characteristics of strong versus weak acids; more specifically, why these differences are important in the process of titrations. In this experiment, there are two titrations performed and measured the pH of one salt solution. This experiment includes a strong acid and strong base…

    Words: 1584 - Pages: 7
  • Differentiate Acids And Bases Lab Report

    How can we differentiate acids and bases? How do we know if a substance is an acid or a base? There are different methods to discover whether a substance is an acid or a base. One of the methods is by using an acid-base indicator or by identifying hydrogen or hydroxide ions in a substance’s chemical formula. Certain materials such as a plastic template, red litmus paper, blue litmus paper, phenolphthalein, universal indicator, and a pH chart can be used to help us distinguish acids and bases.…

    Words: 617 - Pages: 3
  • Previous
    Page 1 2 3 4 5 6 7 8 9 50

Related Topics:

Popular Topics: