Testing for Cation and Anions OBJECTIVE: • Determine the presence of a cation or anion by a chemical reaction • Determine the cation and anion in an unknown solution All salt solutions have both positive (Cations) and negative (Anions) ions dissolved in it. In this experiment you will observe chemical reactions to determine the presence of specific anions and cations. Compare your observations with the reactions of the known solutions and the unknown solution to determine the ions present
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the effect of concentration of thiosulphate on the rate of reaction between sodium thiosulphate and hydrochloric acid. Introduction: Word Equation for the reaction: Balanced Symbol Equation for the reaction: Observations during the reaction: • A yellow precipitate of Sulphur starts to form and the reaction mixture goes cloudy. • A colourless‚ poisonous gas of sulphur dioxide is given off. • Sodium Chloride (salt) and Water also form. The salt dissolves in the solution‚ and
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Sodium hypochlorite‚ also known as chlorine bleach‚ soda bleach‚ or household bleach is a chemical with the formula NaClO. A common way sodium hypochlorite gets into the San Francisco bay is through daily household cleaning products such as laundry bleach. In a survey conducted by The Clorox Company‚ it was found that four out of five households use sodium hypochlorite bleach for their laundry. Since laundry detergent companies are not required to list every ingredient‚ customers are often not aware
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Chemistry F332 Notes Ions in solids and solutions: Structure of an ionic lattice (Sodium Chloride): * Consists of sodium ions (Na+) surrounded by six chloride ions (Cl-) * Chloride ions also surrounded by six sodium ions. * Held together by attraction of oppositely charged ions. * Giant ionic lattice. * Electrostatic bonds hold lattices together. * Structure is simple cubic. * Some ionic crystals contain water. * Known as water of crystallisation. * These crystals
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Mole Ratio of a Chemical Reaction: Copper & Silver Nitrate Lab #4 OBJECTIVE In this experiment‚ you will determine the number of moles of reactants and products present in the reaction of copper and silver nitrate‚ and calculate their mole-to-mole ratio. The mole-to-mole ratio relating to the disappearance of copper and the formation of silver metal will be used to write the balanced equation for the reaction. The reaction of copper metal with silver nitrate solution is a single
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Anatomy of Sodium Hypochlorite Accidents by Omid Mehdipour‚ DDS Donald J. Kleier‚ DMD Robert E. Averbach‚ DDS Omid Mehdipour‚ DDS International Student Program Donald J. Kleier‚ DMD Professor and Chairman Robert E. Averbach‚ DDS Professor of Endodontics Division of Endodontics University of Colorado School of Dental Medicine Aurora‚ Colorado Abstract Sodium hypochlorite (NaOCl) in various concentrations is the most widely used endodontic irrigant‚ but it can be an irritant to vital tissues
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2 1‚ 1‚ 1‚ 2 None of the above 2 - The mass in grams of two moles of iron atoms is: 26.00 g 55.847 g 111.69 g 27.923 g 3 - The formula mass of nitric acid is given by: 31.50 g/mol 17.03 g/mol 63.01 g/mol 126.02 g/mol 4 - Sodium oxide has the formula: Na2O Na2O2 NaO2 Na4O2 5 - The correct name for (NH4)2SO4 is: Ammonium bisulfate Ammonium hydrogen sulfate Ammonium sulfate Ammonium (I) sulfate 6 - If the density of a substance is 4.070 g/mL‚ what is the volume
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From the experiment‚ it was determined that Sodium chloride had a crystalline structure‚ even after being broken into smaller pieces with a hammer. Even though there was two different types of Sodium chloride‚ coarse and fine‚ they still had a symmetrical‚ three-dimensional shape. All ionic compounds have this structure. It was also found that Sodium chloride had a high melting point and sugar had a low melting point. This is because Sodium chloride is ionic and the bonds holding it together take
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Water’s hardness arises from the presence of metal ions – specifically metal ions with a charge of +2 or higher. The ‘scum’ left over in a cleaned shower stall or coffee pot is equivalent to water hardness. Water dissolves salts which contains ions of sodium‚ magnesium‚ calcium‚ iron‚ and many other metal; however‚ the most prevalent ion found is calcium. Since calcium ions typically make the most predominant contribution to water hardness‚ by convention hardness is reported as mg 〖CaCo〗_3/L of solution
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put it into the 100mL beaker‚ Add your 25mL of distilled water and stir to form the calcium chloride solution. Next‚ use stoichiometry to determine how much Na2CO3 and put it into a small paper cup. Then add the 25mL of distilled water to make the sodium carbonate solution. Mix the two solutions in the beaker and a precipitate of calcium carbonate will form instantly. Next set up your filtration assembly. After the filtration assembly is ready‚ swirl the contents of the beaker to dislodge any precipitate
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