Lab Report Name: _____ Date: ______ Ionic Reactions List all of the cations used: Cobalt‚ Copper‚ Iron‚ Barium‚ Nickel List all of the anions used: Phosphate‚ Iodide‚ Sulfate‚ Chloride‚ Bicarbonate‚ Carbonate‚ Hydroxide Compare your results with the solubility rules and/or solubility table in your chemistry text. QUESTIONS: A - Do your results agree with your expectations
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some of the NaOH solution‚ transfer 25cm3 of the solution to a 250 cm3 volumetric flask‚ and fill to the line with distilled water. The alkali will now have a concentration of 0.1 mol dm-3. • In the titration‚ the NaOH will be in the burette‚ and will be titrated into HCl in a conical flask: NaOH (aq) + HCl (aq) NaCl (aq) + H2O (l) • The reaction is 1:1 between NaOH and HCl‚ so a solution of 0.2 mol dm-3 should be used. • Rinse a 25cm3 pipette out with some of this solution‚ and then transfer
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Ionic Bonds Essay The periodic table is a masterpiece of organized chemical information. It is a table of the chemical elements in which the elements are arranged by order of atomic number. The standard form of the table includes periods (horizontal rows in the periodic table) and groups (vertical rows in the periodic table). Atoms are the basic building blocks of ordinary matter. Atoms are made up of particles called protons‚ electrons‚ and neutrons. Protons carry a positive electrical charge‚
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USGBC Colorado Chapter Education Committee Volunteer Information Purpose of this Committee: Determine LEED content and approve instructors (via RFP) Establish LEED content delivery strategy outside of Denver metro area Inventory and Coordinate LEED content delivery (to include New York Urban Green’s training program) Audit classes: Review class content prior to delivery & Review class content during delivery Identify and arrange LEED facilities‚ community tours (via RFP) Vision: Provide
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2- Three experimental methods that student could use to determine whether the unknown substance is ionic or covalent are as follows: a) Heath stability experiment: as we learned in experiment 2‚ Ionic substances have high heat stability. When we heated them over Bunsen burner they always left residue. However‚ covalent substances have low heat stability and don’t leave residue. b) Ionic compounds are good electrolytes while covalent substances are either not an electrolytes or a very weak one. c)
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Experiment#9 - Ionic Reactions Discussion/Error Analysis In the first part of this experiment‚ the student was presented with 7 unique and unidentified bottles of solutions labeled A-G and was expected to be able to analyze the 7 solutions through trial and error and mixing them with one another. For solution A: mixing A + B formed a precipitate‚ A + C generated heat‚ A + D gave no reaction‚ A + E gave no reaction‚ A + F gave no reaction‚ A + G formed a precipitate. For solution B: mixing B + C
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How do ionic bonds form? Transferring the electron forms an ionic bond. After transferring the electron‚ the two atoms become ion n will attract together because they have the opposite charges. Then an ionic bond is formed. How do covalent bonds form? A covalent bond is for sharing of electrons. I remember it like co-existing electrons to share (Eg H20). It is usually between two non-metals. Which compound‚ sugar or salt‚ is a better conductor of electricity? Explain your answer. Salt
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Ionic Reactions Results B - Do your results agree with your expectations from the solubility rules/table? Our results seemed to largely agree with the established solubility rules/table; however‚ a few reactions with the commonality of being mixed with Co(NO3)2 (cobalt nitrate) [reference Row A‚ Columns 2‚ 3‚ and 4] seemed to have such a pale pink tone that it was difficult to decide whether that could have been a precipitate or the lighting in the area where the experiment took place. Ultimately
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water to form solutions that conduct electricity. Nonelectrolyte: A compound that doesn’t dissociate into ions when dissolved in water. 2.) Using examples in the last link‚ draw beakers showing atomic scale representations of aqueous solutions of the following compounds. Classify each as an electrolyte or nonelectrolyte. * Ba(OH)2 (aq) * NH3 (aq) * C3H7OH (aq) * NaHCO3 (aq) 3.) Why would it be important to use de-ionized water when preparing the aqueous solutions in this experiment
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Conductivity of Ionic and Molecular Aqueous Solutions Abstract Aqueous solutions that have free ions have higher conductivity values than solutions with most molecules. The purpose of the experiment was to see if ionic strength of an aqueous solution determines its conductivity. We tested each compound by putting the conductivity probe into its aqueous solution. Then the computer would analyze the data and give us a conductivity value. After each solution was tested‚ we used deionized water
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