form a saturated solution. The equilibrium exists between the aqueous ions and the undissolved solid. A saturated solution contains the maximum concentration of ions of the substance that can dissolve at the solution’s temperature. The equilibrium equation showing the ionic solid lead chloride dissolving in water is: PbCl2(s) ( Pb2+(aq) + 2Cl-(aq) The solubility product expression is: Ksp = [Pb2+][Cl-]2 A knowledge of the Ksp
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Week 1 - Chemical Analysis (1) Horizen Education February 8‚ 2013 1 1.1 Review: Gravimetric and Volumetric Analysis Gravimetric Analysis Solubilities Always soluble: Usually soluble: Exceptions: Na+ ‚ K+ ‚ NO3− ‚ CH3 COO− ‚ NH+ 4 Cl− ‚ I− ‚ Br− i. Sodium carbonate and Silver nitrate ii. Iron (II) sulfate and Lead (II) nitrate iii. Sodium nitrate and Nickel sulfate iv. Potassium hydroxide and Copper (II) nitrate v. Sodium sul de and Cadmium sulfate Ho Write down the
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kinds of water for a long time‚ calcium hydroxide in the cement paste dissolves first (per liter water can dissolve calcium hydroxide of 1.3g). Under the role of still water or zero-pressure water‚ the dissolution will stop because the surrounding water is easy to get saturated due to the dissolved calcium hydroxide‚ and dissolution only occur on the surface‚ little impact. But if the cement paste is in fluid water or pressure water‚ the dissolved calcium hydroxide is easy to be washed away‚ the density
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Conductimetric Titration and Gravimetric Determination of a Precipitate Objective: * Measure the conductivity of the reaction between sulfuric acid and barium hydroxide * use conductivity values to determine equivalence point * measure mass of a product to determine equivalence point gravimetrically * calculate molar concentration of barium hydroxide solution Procedure: * First‚ combine 10.0 mL of the Ba(OH)2 solution with 50 mL of distilled water. Then‚ measure out 60 mL
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Acid + Base/Alkali Salt + Water (Neutralisation) Note: Salts formed always takes the cation (positive ion which is usually a metal) + name of acid. e.g. : Sulphuric acid + SodiumSodium sulphate + Hydrogen Hydrochloric acid + calcium carbonate calcium chloride + CO2 + H2O Practice Questions on Reaction of Acids Complete the word equation(s) below and write its equivalent balanced chemical equation(s). 1. ___________________ + zinc _________ chloride + ____________________
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Solubility Product Constant of Calcium Hydroxide Austin Raniel Tan Institute of Chemistry‚ College of Science‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines ------------------------------------------------- Christian Tica‚ Ryan Tabernilla‚ Michael Siao‚ Ron Mabunga‚ Jaime Olivares‚ and rest of Team Pogi Abstract ------------------------------------------------- By measuring the concentration of the hydroxide ion from a solution saturated with Ca(OH)2 titration analysis
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equilibrium is formed when an ionic solid dissolves in water to form a saturated solution. The equilibrium exists between the aqueous ions and the undissolved solid. A saturated solution contains the maximum concentration of ions of the substance that can dissolve at the solutions temperature. A knowledge of the Ksp of a salt is useful‚ since it allows us to determine the concentration of ions of the compound in a saturated solution. This allows us to control a solution so that precipitation of
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this experiment‚ there are 3 parts need to be done which is complex formation‚ weak acids and bases and precipitation reaction. During complex formation experiment‚ student needs to observe the different reaction occur when adding ammonia or sodium hydroxide in small quantity and in excess. At the second part‚ student needs to measure the pH of different solution by using universal indicator paper and determine whether each solution is acidic‚ basic or neutral. Lastly‚ the precipitation reaction is observed
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Percent Composition Report Hypothesis : By using seperation techniques properly‚ the 3 substance such as; water‚ sand‚ and salt can be seperated and the percent composition of each substance. Which will then be calculated theoritically and after comparison with the actual result‚ the accuracy of the 2 result can be found. Aim : The aim of this experiment is to compare the gravimetric result of the original mixture and the separated substance. The other objective is to calculate each percent
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1) Chemistry Review Key Terms: empirical knowledge theoretical knowledge law of conservation of mass coefficient chemical amount mole Key Concepts: Write chemical equations when given reactants and products (1.5‚ 1.6) Write balanced chemical equations (2.2‚ 2.3) Interpret balanced chemical equations in terms of chemical amount (in moles) (2.3) Convert between chemical amount and mass (2.4) Classify chemical reactions (2.5‚ 2.6) Predict the solubility of elements and ionic and
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