PPT-Salt: Combining ACID and BASE in a Distributed Database

Authors University of Texas Austin Chao Xie Chunzhi Su Manos Kapritsos Yang Wang Navid Yaghmazadeh Lorenzo Alvisi Prince Mahajan Presented By Sharanya Bathey The tale of ACID Transaction. Chemical Reactions. Chemical reactions are the heart of chemistry. Chemical reactions involve a change from reactant substances to product substances. The products have physical and chemical properties different from those of the reactants.. All acids . ionise. in solution to give ………ions.. HCl. . . H. +. + . Cl. - (100%). HCl. . (+ H. 2. O). . . H. 3. O. +. (. aq. ). + . Cl. -. (. aq. ) . H. 2. O + H. +. . . H. Titration. Acid–Base Titration. The concentration of a weak acid or a weak base in water is difficult – if not impossible – to measure directly.. But we can calculate the concentration from the results of titration.. Year 11. CONTENTS. Acidity and alkalinity. Indicators. pH. Acids. General methods for making salts. Making salts from metal oxides. Making salts from metal carbonates. Making salts from metals. Acids and Bases. Properties and Examples. Acids. : . taste . sour, are . soluble. in water and undergo similar chemical reactions, have a . pH of less than 7 . phosphoric acid . (fertilizers, detergents, . Acid and Base Notes. I can distinguish between an acid and a base.. I can list the characteristics of an acid and a base.. I can name acids.. I can name bases.. What do you think an acid is?. Give an example of an acid.. Chemistry Section 3. Acids. Key terms. Electrolysis - Breaking down of compounds using electricity (d.c.). d.c – Direct current. Neutralisation – the reaction between an acid and an alkali to form a neutral solution.. Definitions of acids and bases;. Bronsted’s conjugate acid-base pairs concept;. Determination of [H. 3. O. . ], [OH. -. ], and pH for strong acids and strong bases;. Determination of [H. 3. O. . ], [OH. The body keeps a tight control over the pH in cells and extra-cellular . fluiids. , as changes in the H. . concentration have significant effects on the activity of many molecules, especially enzymes. . A beaker of aqueous solution has a pH of 7.2 and the desired pH is 9.4. Should an acid or base be added?. Base, because to increase the pH, the H. +. needs to be at a lower concentration. Bases will either increase the OH. Lecturer. . Ghaidaa. S . Hameed. . Physical. . pharmacy. . Buffers. . are compounds or mixtures of compounds that, by their presence in solution, resist changes . in pH . upon the addition of small quantities of acid or alkali. The resistance to a change in pH is . pH of precipitation in the United States 2001, and in Europe as reported in 2002.. What are Acids and Bases?. acid = substance that increases the concentration of H. 3. O. +. base = decreases the concentration of H. Although the acid-dissociation constant for phenol (C. 6. H. 5. OH) is listed in your book, the dissociation constant for the . phenolate. ion (C. 6. H. 5. O. -. ) is not.. Explain why it is not necessary to list both.. Acid. is defined as a substance which when dissolved in water gives hydrogen ions. (H +) . Examples.. Base is defined as a substance which when dissolved in water gives hydroxyl ions. (OH-) . Examples..