Acid And Base Theories Paper

Improved Essays
Acid and Base Theories Final Paper In the world of science, there are three main theories for acids and bases. Those three theories are the Arrhenius theory, the Bronsted-Lowry theory, and the Lewis theory. An Arrhenius acid is defined as a substance that increases the concentration of hydronium ions in aqueous solution and an Arrhenius base is defined as a substance that increases the concentration of hydroxide ions in aqueous solutions. The definition of a Bronsted-Lowry acid is that it is a substance that donates a proton to another substance. The definition of a Bronsted-Lowry base is that it is a substance that accepts a proton from another substance another substance. A Lewis acid is an atom, ion, or molecule that accepts a pair of electrons. …show more content…
For example both the Arrhenius theory and the Bronsted-Lowry theory loosely define an acid as a proton donor/producer. For example in the equation HCl + H2O→H3O+ + Cl-, hydrochloric acid is defined as an Arrhenius acid and a Bronsted-Lowry acid because it donates a proton to form a hydronium ion and it produces hydronium ions in solution. In the same way, if something is a Bronsted-Lowry acid or base, it is always a Lewis acid or base because the Bronsted-Lowry theory states that acids are proton donors and the Lewis theory states that acids as electron acceptors. For example in the same chemical equation as before, HCl + H2O→H3O+ + Cl-, hydrochloric acid is defined as a Bronsted-Lowry acid and a Lewis acid because it donates a proton and it accepts an …show more content…
For example, as stated before all Bronsted-Lowry acids and bases can be defined as a Lewis acid or base. However, something defined as a Lewis acid or base is not always a Bronsted-Lowry acid or base. For example, CH6N+ is a Lewis base but because there is no lone pair to accept a proton, it cannot be a Bronsted-Lowry base. The difference between the Arrhenius and Lewis definitions are that the Arrhenius definition is reliant on the ions produced in water but the Lewis definition is reliant on the transfer of

Related Documents

  • Improved Essays

    Nt1310 Unit 6 Lab

    • 1594 Words
    • 7 Pages

    This means that the unknown compound does conduct electricity. The compound was tested and had a pH of 5. This means that the compound is acidic according to the pH scale. Being acidic means that the substance has more hydrogen ions than hydroxide ions according to “pH”3 .The chemical and physical properties are stated in Table 1.…

    • 1594 Words
    • 7 Pages
    Improved Essays
  • Improved Essays

    6.03 Calorimetry

    • 711 Words
    • 3 Pages

    When the pH increases the concentration decrease and vise versa. 10.Describe the differences in Acids and…

    • 711 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Neutralize Ph Lab

    • 382 Words
    • 2 Pages

    Purpose: To find the pH of different household items and to see what substances are acids or bases. To see how different substances neutralize each other. Hypothesis: I hypothesize that cleaning products will be bases and foods and substances we ingest will be acids. Materials: • Oil • Finesse Shampoo • Anti Freeze • Drain Opener • Hand Soap • Vinegar •…

    • 382 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    In this experiment, identifying the acids, bases, or neutrality of the unknown substance in a specific set are used to find the actual substances. The following sets of substances could have been assigned: Set 1 - Silver nitrate (AgNO3), Manganese(II) nitrate (Mn(NO3)2), Barium nitrate (Ba(NO3)2), Hydrochloric acid (HCl), Sodium Hydroxide (NaOH); Set 3 - Silver nitrate (AgNO3), Barium nitrate (Ba(NO3)2), Hydrochloric acid (HCl), Sulfuric acid (H2SO4), Sodium Hydroxide (NaOH); Set 4 - Silver nitrate (AgNO3), Lead (II) nitrate (Pb(NO3)2), Hydrochloric acid (HCl), Ammonia (NH3), Water (H2O). From the substances above Hydrochloric acid (HCl) is the stronger acid, and Sulfuric acid (H2SO4) and Lead (II) nitrate (Pb(NO3)2 are the weaker acids. If the substance is not an acid nor a base, the substance is neutral. In each set there were three neutral compounds, one acid, and one…

    • 495 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    Unknown Compounds

    • 695 Words
    • 3 Pages

    When hydrochloric acid was added to the unknown and known solutions, both resulted in no reaction. This also occurred when potassium hydroxide was added to both of the solutions. Barium chloride was then added to the two solutions, which resulted in a cloudy white precipitate from both of the solutions. A cloudy white precipitate also formed when calcium nitrate and ammonium nitrate were added to both the unknown and known solutions. These reactivity tests were conducted in order to establish how the unknown compound would react with acids, bases, and salts.…

    • 695 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Within methods of chemistry, the most common and obvious way to find the PH of a substance is to use an acid-base indicator in order to determine the pH level by comparing the indicators color to what pH it represents. An example of this is universal indicator (a mixture of a variety of other indicators) that changes a wide variety of colors depending on the pH it is subject to. This colorizing effect is somewhat like a color dye for a molecule, that changes color when it detects a specific threshold is crossed in terms of the pH of the substance, thus allowing an approximate pH to be determined. This color change is due to the molecules present in acid-base indicators responding to the changes in the overall concentration of the hydrogen…

    • 140 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    Testing Water Quality

    • 1435 Words
    • 6 Pages

    In this lab we will be testing the water quality of the Lewis and Clark Lake. We will be testing to see if the water is good quality and good for the fish and creatures that need that water to live. The first step is to extract the water from the lake and analyze the way it looks. We should write down the description of the water. The second step is to take it to the lab to test the water for pollutants and to test the quality of the water.…

    • 1435 Words
    • 6 Pages
    Improved Essays
  • Improved Essays

    Bottle Rocket Lab Report

    • 1015 Words
    • 5 Pages

    Chlorine is now a negatively charged ion, as it has more electrons than protons. Acids are positively charged, and the more positive hydrogen atoms they have in them, the more acidic they are. Whereas when bases contain more negatively charged hydroxide, and depending how much there is, can make a substance more alkaline. The two cancel each other out, as such, if they are the same level away from pH of 7 (refer to introduction), and make a neutral substance(s), because they have opposite…

    • 1015 Words
    • 5 Pages
    Improved Essays
  • Superior Essays

    elsewhere is absorbed by our oceans. Ocean acidification is caused by just that, the quarter of carbon dioxide that still remains from our atmosphere being taken in by the ocean’s surface layer. When carbon dioxide that hits the ocean’s surface layer combines with seawater, some of the carbon dioxide reacts with the water to from carbonic acid. Carbonic acid separates into hydrogen ions and bicarbonate ions. Then, hydrogen ions combines with carbonate ions forming more bicarbonate ions which makes seawater more acidic.…

    • 1155 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    An acid is a substance that reacts and donates H+ ions. A base is a substance that accepts H+ ions. An acid that donates more that two H+ ions is polyprotic. In a reaction where an acid and a base react with each other in water till no hydroxide ions remain. Molarity is the concentration of a solution.…

    • 537 Words
    • 3 Pages
    Improved Essays
  • Superior Essays

    Together, they broadened the definition of acids and bases. Bases were now elements that included any molecule that could donate an electron to be shared. Consequently, A Lewis base is any species that donates a pair of electrons to a Lewis acid to form a Lewis adduct. Throughout their work with acids and bases, Lewis taught Seaborg the research method of breaking a big project into small parts; which he later used in the Manhattan Project. Before his research assistantship expired, he began instructing in the chemistry department in 1939.…

    • 1630 Words
    • 7 Pages
    Superior Essays
  • Improved Essays

    Ocean Acidification Lab

    • 1136 Words
    • 5 Pages

    These acidic waters are then characterized by low alkalinity, conductivity and ionic content…

    • 1136 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    This is achieved through the existence of the equilibrium HA (aq) ⇄ H+ (aq) + A- (aq). When a strong acid or alkali is added the equilibrium shifts to the right or the left adhering to Le Châtelier 's principle, which states that whenever an equilibrium is subject to change of concentration, temperature, volume, or pressure, the system will readjust itself to some extent, to counteract the effect of the change. This means that if a strong acid is introduced to a buffer, the hydrogen ion concentration would increase by less than the amount expected. This is because adding H+ ions lowers the pH which shifts the equilibrium to the left, thus lowering the H+ ion concentration raising the…

    • 1043 Words
    • 4 Pages
    Improved Essays
  • Great Essays

    Acid Rain In Canada

    • 1316 Words
    • 6 Pages

    Acid rain is any form of precipitation that has unusually high acidity (a pH level below 5.6) and caused by the transformation of nitrogen oxides and sulfur dioxide into secondary pollutants. pH is is a scale used that measures the acidity of liquids and ranged from 0 to 14. The lower the number, the higher acidity, or the higher concentration of hydrogen ions. 0-5 is considered acidic and as you move up to 7, this indicates the substance is neutral. The higher numbers on the scale indicate high alkalinity (basic), with the highest possible pH of 14.…

    • 1316 Words
    • 6 Pages
    Great Essays
  • Decent Essays

    Science Fair Experiment

    • 345 Words
    • 2 Pages

    Acid is a The scientist who first discovered the pH scale was “Danish biochemist Soren Peter Lauritz Sorensen. He…

    • 345 Words
    • 2 Pages
    Decent Essays