solubility differences of two anions and the titration endpoint of a precipitate. The net ionic reaction during the titration is as follows: Ag+ + Cl- → AgCl(s) The Ksp for AgCl is 1.8 x 10-10 and that for Ag2CrO4 is 1.2 x 10-12. Thus‚ as silver ions are slowly added to solution‚ AgCl precipitates first‚ removing the chloride ions from solution. As can be inferred‚ Ag+ ions react with almost all chloride ions before precipitation of Ag2CrO4 begins. Thus‚ the secondary reaction is
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Naphthalene Ball in Water Objective: In this experiment‚ we will determine if the naphthalene can be dissolve in water or not. And what will happen in the filter paper if we stick it in the funnel and let it absorbed the fumes in the boiling water with powdered naphthalene. Materials: Evaporating dish Spatula Watch Glass Filter paper Tripod Mortar and pestle Alcohol Lamp Funnel Beaker Data: Naphthalene 1. white crystalline compound 2. has a strong odor 3. round
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Allied Chemical to manufacture one thousand containers. Allied Chemical needs the containers for storage of five kinds of aqueous nitrate solutions. The aqueous nitrates are copper (II) nitrate‚ lead (II) nitrate‚ zinc nitrate‚ magnesium nitrate‚ and silver nitrate. You can not manufacture the containers from glass due to possible breakage. Nor will plastic containers do because plastic tends to harden over time and also may shatter. This leaves metal. Unfortunately‚ many metals get eaten away
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liquid -Small silver ball -Grew ten times original size -Rust Color -Clear transparent liquid A buildup of residue formed and the clear solution became cloudy with flaky matter. Iron & Magnesium Chloride -Clear transparent liquid -Silver nail - No Reaction -No reaction Zinc & Lead (II) Nitrate -Clear transparent liquid -Silver clump -Black and shiny Black powdery crystals formed within the solution and around the Zinc. Magnesium & Nickel Nitrate -Green liquid -Silver shiny strip
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Chemicals Solutions of Anions: Sodium chloride‚ NaCl‚ 0.2 M Sodium bromide‚ NaBr‚ 0.2 M Potassium iodide‚ KI‚ 0.2 M Sodium sulfate‚ Na2SO4‚ 0.2 M Sodium carbonate‚ Na2CO3‚ 0.2 M Sodium nitrate‚ NaNO3‚ 0.2 M Test Reagents: Silver nitrate‚ AgNO3‚ 0.1 M Ammonia‚ NH3‚ 6 M Nitric acid‚ HNO3‚ 6 M Potassium permanganate‚ KMnO4‚ 0.1 M Mineral oil Sodium hydroxide‚ NaOH‚ 6 M Barium hydroxide‚ Ba(OH)2‚ saturated Barium chloride‚ BaCl2‚ 0.1 M Acetic acid
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Otis in exchange for some gold. The falling action occurred when Missie Mae was pregnant a few months later. While the denouement occurred when Joe finally figured that the child was in fact a spitting image of him and his‚ and he continued to throw silver dollars at Missie Mae like old times. 4. In what ways does dialect suggest a sense of place; how do Joe and the candy shop clerk indicate location in their speech? For starters in the story Negro dialect is used to suggest a black community
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added to theplating solution to give a more adherent coating‚ though the reasons for this effect are not well understood. Electroplating may be used to increase the value or improve the appearance of an object.For example‚ thetechnique is used to silver-plate table utensils and to weatherproofobjects with cadmium orchromium plating. Coatings such as zincand tin provideprotection againstcorrosion. Other platedmetals include nickel‚copper‚ and gold. While the electroplating is in progress‚ additionalsalts
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taint the coin’s surface if soaking for a long time) or olive oil — olive oil is a very gentle way to clean coins‚ but you may need to soak them for several weeks. Silver‚ copper‚ and nickel-clad coins can be soaked in distilled water or‚ to remove tough stains‚ white vinegar. A 6-minute soak in lemon juice may also be used on silver coins. This will not only protect the coin but it will help give the coin a finish at the end of the cleaning. For gold coins‚ soaking in very hot soapy water works
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population nearly double while the money circulation rose by only 60 %( Doc C). Railroads had a monopoly on shipping which raised costs and affected profit‚ the value of crops deflated‚ and big business was a strong opponent to the much needed ’Free Silver Movement’ that farmers were relying on. The first major topic regarding farmers discontent with their economic situation involves the shipping monopolies controlled by the railroad companies. The cost of transportation was spiraling out of control
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Qualitative Test for Some Cations I (The Silver Group) Objective: At the end of the class the student should be able to: 1. Separate‚ detect and identify the ions in a given unknown solution possibly containing the ions of the silver group. 2. Identify the substance responsible for the positive result of each test 3. Point out the suitable conditions necessary for the detection process and the reasons for such conditions Introduction Procedure: 1. 3 test tube labeled 1‚2‚3 was obtained
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