Word and Skeleton Equations Practice (ws Fall 2010)
... Write the WORD and SKELETON equations for each chemical reaction. Indicate the state of each reactant and product in the skeleton equation. Remember that the following seven elements are diatomic: hydrogen, H2(g); nitrogen, N2(g); oxygen O2(g); fluorine, F2(g); chlorine Cl2(g); bromine, Br2(l); and ...
... Write the WORD and SKELETON equations for each chemical reaction. Indicate the state of each reactant and product in the skeleton equation. Remember that the following seven elements are diatomic: hydrogen, H2(g); nitrogen, N2(g); oxygen O2(g); fluorine, F2(g); chlorine Cl2(g); bromine, Br2(l); and ...
Carboxylic Acid Derivatives and Nitrogen Cpds
... H decolourises aqueous bromine with the formation of a white precipitate K. No orange crystals are observed when 2,4-dinitrophenyihydrazine is added to H. However when H is heated with alkaline aqueous iodine and then followed by careful acidification, some yellow crystals are produced together with ...
... H decolourises aqueous bromine with the formation of a white precipitate K. No orange crystals are observed when 2,4-dinitrophenyihydrazine is added to H. However when H is heated with alkaline aqueous iodine and then followed by careful acidification, some yellow crystals are produced together with ...
SOLUBILITY RULES FOR IONIC COMPOUNDS IN WATER
... 76. The United States produces more than 7 billion kilograms of vinyl chloride annually. Most is converted into polymer polyvinyl chloride (PVC), which is used to make piping, siding, gutters, floor tiles, clothing, and toys. Vinyl chloride is made from a two-step process, in which a chlorine atom ...
... 76. The United States produces more than 7 billion kilograms of vinyl chloride annually. Most is converted into polymer polyvinyl chloride (PVC), which is used to make piping, siding, gutters, floor tiles, clothing, and toys. Vinyl chloride is made from a two-step process, in which a chlorine atom ...
Chapter 7 lecture notes: Solutions
... This particular gas producing reaction is important in medicine because sodium bicarbonate is used as an over-the-counter therapeutic agent to treat acid indigestion (heartburn). Sodium bicarbonate is the primary active ingredient in many antacids, such as alka-seltzer. Sodium bicarbonate “neutraliz ...
... This particular gas producing reaction is important in medicine because sodium bicarbonate is used as an over-the-counter therapeutic agent to treat acid indigestion (heartburn). Sodium bicarbonate is the primary active ingredient in many antacids, such as alka-seltzer. Sodium bicarbonate “neutraliz ...
Answers PRACTICE EXAM II Spring 2008 Part I. Multiple Choice (3
... Part II - Total points = 55. Answer each of the following questions. SHOW ALL WORK ! 1. (10 points) Osmotic pressure measurements are routinely used in the determination of molecular weights for high molecular proteins. An African swine fever virus-induced protein (p12) was studied in virus-infecte ...
... Part II - Total points = 55. Answer each of the following questions. SHOW ALL WORK ! 1. (10 points) Osmotic pressure measurements are routinely used in the determination of molecular weights for high molecular proteins. An African swine fever virus-induced protein (p12) was studied in virus-infecte ...
Copy of Acids, bases, salts answer key
... Limitations of Arrhenius theory : Arhhenius’ theory became quite popular and was widely accepted yet it had the following limitations: This theory was applicable only to aqueous solutions. Substances like Ammonia (NH3) do not contain hydroxide (OH) ion, even then its aqueous solution acts as a ...
... Limitations of Arrhenius theory : Arhhenius’ theory became quite popular and was widely accepted yet it had the following limitations: This theory was applicable only to aqueous solutions. Substances like Ammonia (NH3) do not contain hydroxide (OH) ion, even then its aqueous solution acts as a ...
Practice Exam #2
... 25) 7, 5, 3, 1. HClO4 has the highest. 26) Li3 PO4 27) The salt contains insoluble compounds to prevent the grains of salt from sticking together in humid weather. 28) increases the concentration of H+ ions in aqueous solutions 29) a0 Yes, b) Yes, c) No ...
... 25) 7, 5, 3, 1. HClO4 has the highest. 26) Li3 PO4 27) The salt contains insoluble compounds to prevent the grains of salt from sticking together in humid weather. 28) increases the concentration of H+ ions in aqueous solutions 29) a0 Yes, b) Yes, c) No ...
Liquid–liquid extraction
Liquid–liquid extraction (LLE) consists in transferring one (or more) solute(s) contained in a feed solution to another immiscible liquid (solvent). The solvent that is enriched in solute(s) is called extract. The feed solution that is depleted in solute(s) is called raffinate.Liquid–liquid extraction also known as solvent extraction and partitioning, is a method to separate compounds based on their relative solubilities in two different immiscible liquids, usually water and an organic solvent. It is an extraction of a substance from one liquid into another liquid phase. Liquid–liquid extraction is a basic technique in chemical laboratories, where it is performed using a variety of apparatus, from separatory funnels to countercurrent distribution equipment. This type of process is commonly performed after a chemical reaction as part of the work-up.The term partitioning is commonly used to refer to the underlying chemical and physical processes involved in liquid–liquid extraction, but on another reading may be fully synonymous with it. The term solvent extraction can also refer to the separation of a substance from a mixture by preferentially dissolving that substance in a suitable solvent. In that case, a soluble compound is separated from an insoluble compound or a complex matrix.Solvent extraction is used in nuclear reprocessing, ore processing, the production of fine organic compounds, the processing of perfumes, the production of vegetable oils and biodiesel, and other industries.Liquid–liquid extraction is possible in non-aqueous systems: In a system consisting of a molten metal in contact with molten salts, metals can be extracted from one phase to the other. This is related to a mercury electrode where a metal can be reduced, the metal will often then dissolve in the mercury to form an amalgam that modifies its electrochemistry greatly. For example, it is possible for sodium cations to be reduced at a mercury cathode to form sodium amalgam, while at an inert electrode (such as platinum) the sodium cations are not reduced. Instead, water is reduced to hydrogen. A detergent or fine solid can be used to stabilize an emulsion, or third phase.