Now showing items 1-20 of 26

    • Lección de Química # 10 Estequiometria 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Chemical reactions are addressed by the amount of reactants in the reaction, if one reactant is completely consumed, the reaction is stopped, so this reagent is called Reagent limit. This method is widely used for the ...
    • Lección de Química # 11 Termoquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Thermochemistry is the area of chemistry that studies chemical reactions that release energy or need. Calling endothermic the reactions that require energy and exothermic when the energy is released.
    • Lección de Química # 12 Termoquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Hess's law states that the enthalpy change in a chemical reaction will be the same if it is produced in one stage or in several stages.
    • Lección de Química # 13 Termoquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The probability of such particles are organized, molecules or atoms is known as entropy process, it also relates to the order of the chemical systems.
    • Lección de Química # 14 Termoquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Chemical reactions that produce or require energy to occur are studied by the branch of chemistry known as thermochemical, where the escaping heat in one reaction is quantified and working in enthalpic terms.
    • Lección de Química # 15 Equilibrio químico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Chemical equilibrium when the rate of reaction of a reactive product equals the reaction rate of reactive products.
    • Lección de Química # 16 Equilibrio químico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Chemical equilibrium when the rate of reaction of a reactive product equals the reaction rate of reactive products.
    • Lección de Química # 17 Equilibrio químico 

      Lopez-Díaz, L. (Laura) (Escuela de Ingeniería de Antioquia EIA, 2014-05-27)
      In a chemical reaction when the concentrations of reactants and products do not change over time, is known as the chemical equilibrium, in this case the speed of forward and reverse reactions are the same
    • Lección de Química # 18 Equilibrio químico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The relationship between the concentrations of the reactants and products in an equilibrium reaction is known as equilibrium constant, in terms of concentrations is called Kc. And depending of the pressure in gaseous systems ...
    • Lección de Química # 19 Equilibrio químico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Reactions in balance may be disturbed such as changes of temperature, volume, quantity of substance or pressure. The reaction will try to redress the balance, this principle is known as the law of Le Chatelier.
    • Lección de Química # 2 Nomenclatura Inorgánica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Nomenclature hydracids acids which are formed by nonmetal and hydrogen, acids and oxyacids containing oxygen in their structure.
    • Lección de Química # 20 Reacciones ácido base 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      When some solids are mixed with water the following cases occur: if the substance is completely dissolved and conducts electricity this substance is classified as a strong electrolyte, if is partially dissolved and conducts ...
    • Lección de Química # 21 Reacciones ácido base 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Hydrolysis is a phenomenon that occurs when an ionic substance breaks his bond on contact with water.
    • Lección de Química # 22 Equilibrio iónico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      weak acids and bases in aqueous solution present ion chemical balance and it is vital for many biological and industrial processes where water is used.
    • Lección de Química # 23 Equilibrio iónico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The buffer solutions are solutions with the ability to regulate a desired pH, for this process is important have an acid or a weak base, with its own counterion.
    • Lección de Química # 24 Reacciones ácido base 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Gaseous detachment, precipitation, warming and color change, are evidence that there was a chemical change process, but some reactions do not generate such changes as is the case of an acid base reaction, in this case a ...
    • Lección de Química # 25 Electroquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The electrochemical reactions are chemical reactions that need or produce electricity.
    • Lección de Química # 26 Electroquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The electrolytic cell is a device used for reactions that require electrical energy to occur.
    • Lección de Química # 27 Electroquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The Nernst equation is used when the electrochemical reactions do not occur in standard conditions. (25 ° C, 1 atm, 1M)
    • Lección de Química # 3 Reacciones químicas 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      nomenclature and assignment of oxidation numbers in compounds substances by systematic, stock and traditional methods.