synthesis and potentiometric analysis of - G
... phosphorylated thiourea derivative suggests the potential ability to form complexes at the expense of the thiazole ring nitrogen atoms and polar thiocarbonyl group. Complexing ability of compounds (2) and (4) was investigated by studying the reactions with copper acetate (II) in various water - orga ...
... phosphorylated thiourea derivative suggests the potential ability to form complexes at the expense of the thiazole ring nitrogen atoms and polar thiocarbonyl group. Complexing ability of compounds (2) and (4) was investigated by studying the reactions with copper acetate (II) in various water - orga ...
An Introduction to Chemistry
... small to be seen with an optical microscope is considered to be submicroscopic. • MICROSCOPIC: Anything that is too small to be seen with the naked eye but is large enough to be seen with an optical microscope is considered to be microscopic. • MACROSCOPIC: Anything that is large enough to be seen w ...
... small to be seen with an optical microscope is considered to be submicroscopic. • MICROSCOPIC: Anything that is too small to be seen with the naked eye but is large enough to be seen with an optical microscope is considered to be microscopic. • MACROSCOPIC: Anything that is large enough to be seen w ...
Relating Solubility and Ksp
... a solute and a solvent. The solute is the substance that is being dissolved and the solvent is the substance that is doing the dissolving. For example, sugar is a solute and water is a solvent. With this concept, we can understand solubility on a more specific level. Solubility is known to be the ma ...
... a solute and a solvent. The solute is the substance that is being dissolved and the solvent is the substance that is doing the dissolving. For example, sugar is a solute and water is a solvent. With this concept, we can understand solubility on a more specific level. Solubility is known to be the ma ...
슬라이드 1
... • The speed │Vrel │ = {2v2 -2v2 cos (π-θ)}1/2 = √2 v (1+cos θ) • Averaging over the all orientations, = √2 [∫ 0, 2π dφ ∫0, π (1+cos θ) sinθ dθ] / 4π
= 2-1/2 ∫0, π sinθ dθ = √2 [-cos θ]0, π = √2 = √2
• This is only a special case in which v1 = v2 = v.
• A general is more difficu ...
... • The speed │Vrel │ = {2v2 -2v2 cos (π-θ)}1/2 = √2 v (1+cos θ) • Averaging over the all orientations,
New Liquid Crystalline Tolanes from (-)
... has experienced a great growth, especially of ferroelectric liquid crystals (FLCs). This is due to practical applications of FLCs as high resolution displays and in photonical technologies for storage and reproduction of information based on non-linear optical (NLO) effects [1]. The correlation betw ...
... has experienced a great growth, especially of ferroelectric liquid crystals (FLCs). This is due to practical applications of FLCs as high resolution displays and in photonical technologies for storage and reproduction of information based on non-linear optical (NLO) effects [1]. The correlation betw ...
lecture 5 phase equilibria
... • A constituent of a system is a chemical species (an ion or a molecule) that is present. • A mixture of water and ethanol has two constituents. • A solution of sodium chloride has three constituents: Na+, Cl-, H2O. ...
... • A constituent of a system is a chemical species (an ion or a molecule) that is present. • A mixture of water and ethanol has two constituents. • A solution of sodium chloride has three constituents: Na+, Cl-, H2O. ...
슬라이드 1
... • This is only a special case in which v1 = v2 = v. • A general case (v1 ≠ v2) is more difficult to average but should give the same result. ...
... • This is only a special case in which v1 = v2 = v. • A general case (v1 ≠ v2) is more difficult to average but should give the same result. ...
CLASSIFICATION OF MATTER
... Separation of the components of homogeneous mixtures (I) Evaporation and crystallisation Evaporation is a separation technique that consists of totally or partially eliminating the undesired volatile components of a liquid mixture through the vaporisation of all or part of the liquid. This can be a ...
... Separation of the components of homogeneous mixtures (I) Evaporation and crystallisation Evaporation is a separation technique that consists of totally or partially eliminating the undesired volatile components of a liquid mixture through the vaporisation of all or part of the liquid. This can be a ...
Lesson 4.4 acid base reactions
... Another simple property of acids and bases is their ability to cause color changes in certain dyes. An acid-base indicator is a dye used to distinguish between acidic and basic solutions by means of the color changes it undergoes in these solutions. Such dyes are common in natural materials. For ex ...
... Another simple property of acids and bases is their ability to cause color changes in certain dyes. An acid-base indicator is a dye used to distinguish between acidic and basic solutions by means of the color changes it undergoes in these solutions. Such dyes are common in natural materials. For ex ...
Fractional Distillation
... wrapping the column in glass wool and by shinning a heat lamp on it. The efficiency of a fractionating column is typically reported in terms of its Hold-Up and its Number of Theoretical Plates. The Hold-Up is the amount of liquid required to wet the column packing. It is important for fairly small s ...
... wrapping the column in glass wool and by shinning a heat lamp on it. The efficiency of a fractionating column is typically reported in terms of its Hold-Up and its Number of Theoretical Plates. The Hold-Up is the amount of liquid required to wet the column packing. It is important for fairly small s ...
Predictive thermodynamics for ionic solids and
... groups. (An extensive list of group methods is presented in our ESI.†) The most developed of these are termed Benson group methods.25 In order to permit broad application of the methods, it has been necessary to develop hundreds of group terms, with the further complication of the necessity for the ...
... groups. (An extensive list of group methods is presented in our ESI.†) The most developed of these are termed Benson group methods.25 In order to permit broad application of the methods, it has been necessary to develop hundreds of group terms, with the further complication of the necessity for the ...
Net Ionic Equation Powerpoint Tutorial
... Here the possible cross-products are Pb with I and Na with NO3. Let’s check whether either of these meets one of the three criteria: something insoluble, a weak acid, or something that decomposes. NaNO3 is not insoluble (by rule #1); it is not a weak acid (since it doesn’t start with H, it’s not an ...
... Here the possible cross-products are Pb with I and Na with NO3. Let’s check whether either of these meets one of the three criteria: something insoluble, a weak acid, or something that decomposes. NaNO3 is not insoluble (by rule #1); it is not a weak acid (since it doesn’t start with H, it’s not an ...
Properties of Pure Substance
... Ø Elements Substances which cannot be decomposed into simpler substances by chemical means. Ø Compounds Can be decomposed into two or more elements. ...
... Ø Elements Substances which cannot be decomposed into simpler substances by chemical means. Ø Compounds Can be decomposed into two or more elements. ...
Activity (chemistry) - Chemical Engineering
... Hence the activity will depend on any factor that alters the chemical potential. These include temperature, pressure, chemical environment etc. In specialised cases, other factors may have to be considered, such as the presence of an electric or magnetic field or the position in a gravitational fiel ...
... Hence the activity will depend on any factor that alters the chemical potential. These include temperature, pressure, chemical environment etc. In specialised cases, other factors may have to be considered, such as the presence of an electric or magnetic field or the position in a gravitational fiel ...
Introduction
... 2 H2 (g) + O2 (g) → 2 H2O (l). From this, don't know everything about the reaction, but we do know the reactants, the products, the states of the reactants and products and the stoichiometry of the reaction. The stoichiometry is an essential component of the equation if we are to perform calculation ...
... 2 H2 (g) + O2 (g) → 2 H2O (l). From this, don't know everything about the reaction, but we do know the reactants, the products, the states of the reactants and products and the stoichiometry of the reaction. The stoichiometry is an essential component of the equation if we are to perform calculation ...
N1 Unit N Outline
... N1: UNIT OUTLINE N2: Unit N Reading Notes N3: Supplemental problems in solution stoichiometry and molar dilution N4: CHAPTER 16 REVIEW ACTIVITY, MOLARITY CALCULATIONS ...
... N1: UNIT OUTLINE N2: Unit N Reading Notes N3: Supplemental problems in solution stoichiometry and molar dilution N4: CHAPTER 16 REVIEW ACTIVITY, MOLARITY CALCULATIONS ...
Properties_problems 5
... where Ev is defined as the energy change upon isothermal vaporization of the saturated liquid to the ideal gas state at infinite dilution and Vi is the molar volume of the liquid. The solubility parameter of a polymer has to be determined indirectly or calculated by group-contribution methods. Calc ...
... where Ev is defined as the energy change upon isothermal vaporization of the saturated liquid to the ideal gas state at infinite dilution and Vi is the molar volume of the liquid. The solubility parameter of a polymer has to be determined indirectly or calculated by group-contribution methods. Calc ...
ELECTROLYTES: NONELECTROLYTES
... Covalent acids form ions in solution, with the help of the water molecules. For instance, hydrogen chloride molecules, which are polar, give up their hydrogens to water, forming chloride ions (Cl-) and hydronium ions (H3O+). ...
... Covalent acids form ions in solution, with the help of the water molecules. For instance, hydrogen chloride molecules, which are polar, give up their hydrogens to water, forming chloride ions (Cl-) and hydronium ions (H3O+). ...
Міністерство охорони здоров`я України
... The mass of a gas that dissolves at a constant temperature in a given volume of a liquid is directly proportional to the partial pressure of the gas. where C is the mass concentration of the gas in a saturated solution, p is the partial pressure, and k is a constant known as Henry's law constant (or ...
... The mass of a gas that dissolves at a constant temperature in a given volume of a liquid is directly proportional to the partial pressure of the gas. where C is the mass concentration of the gas in a saturated solution, p is the partial pressure, and k is a constant known as Henry's law constant (or ...
Bonding and Structure - Lesmahagow High School
... ionic bond and how the ions pack together. E.g. NaF - m.p 1000oC, NaI - 660oC. Ionic compounds conduct electricity when dissolved in water or when molten as the ions are free to move. Electrolysis of an ionic solution or melt causes a chemical change at the electrodes. They do not conduct when solid ...
... ionic bond and how the ions pack together. E.g. NaF - m.p 1000oC, NaI - 660oC. Ionic compounds conduct electricity when dissolved in water or when molten as the ions are free to move. Electrolysis of an ionic solution or melt causes a chemical change at the electrodes. They do not conduct when solid ...
PROPERTIES OF SOLUTIONS
... with undissolved solute present, the solution is saturated o Solubility is the amount of solute required to form a saturated solution Factors affecting solubility Nature of the solute Nature of the solvent Temperature Pressure Solute-Solvent interactions Liquids that mix are miscible Int ...
... with undissolved solute present, the solution is saturated o Solubility is the amount of solute required to form a saturated solution Factors affecting solubility Nature of the solute Nature of the solvent Temperature Pressure Solute-Solvent interactions Liquids that mix are miscible Int ...
Ionic liquid
An ionic liquid (IL) is a salt in the liquid state. In some contexts, the term has been restricted to salts whose melting point is below some arbitrary temperature, such as 100 °C (212 °F). While ordinary liquids such as water and gasoline are predominantly made of electrically neutral molecules, ionic liquids are largely made of ions and short-lived ion pairs. These substances are variously called liquid electrolytes, ionic melts, ionic fluids, fused salts, liquid salts, or ionic glasses. Ionic liquids have many applications, such as powerful solvents and electrically conducting fluids (electrolytes). Salts that are liquid at near-ambient temperature are important for electric battery applications, and have been used as sealants due to their very low vapor pressure.Any salt that melts without decomposing or vaporizing usually yields an ionic liquid. Sodium chloride (NaCl), for example, melts at 801 °C (1,474 °F) into a liquid that consists largely of sodium cations (Na+) and chloride anions (Cl−). Conversely, when an ionic liquid is cooled, it often forms an ionic solid—which may be either crystalline or glassy.The ionic bond is usually stronger than the Van der Waals forces between the molecules of ordinary liquids. For that reason, common salts tend to melt at higher temperatures than other solid molecules. Some salts are liquid at or below room temperature. Examples include compounds based on the 1-Ethyl-3-methylimidazolium (EMIM) cation and include: EMIM:Cl, EMIM dicyanamide, (C2H5)(CH3)C3H3N+2·N(CN)−2, that melts at −21 °C (−6 °F); and 1-butyl-3,5-dimethylpyridinium bromide which becomes a glass below −24 °C (−11 °F).Low-temperature ionic liquids can be compared to ionic solutions, liquids that contain both ions and neutral molecules, and in particular to the so-called deep eutectic solvents, mixtures of ionic and non-ionic solid substances which have much lower melting points than the pure compounds. Certain mixtures of nitrate salts can have melting points below 100 °C.The term ""ionic liquid"" in the general sense was used as early as 1943.