TITLE: Solubility and Thermodynamics PURPOSE: The purpose of the lab was to determine the thermodynamics variables of ∆H‚ ∆S‚ and ∆G for the dissolution reaction of potassium nitrate in water. The solubility of potassium nitrate in mol/L was measured over a range of various temperatures by finding out at what temperature crystallization began for solutions of different molarities. Then‚ the equilibrium constant was calculated and a graphical relationship between the natural logarithm of the
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! ! ! ! ! ! ! Determining the solubility of Sodium hydroxide ! ! ! ! ! ! ! ! ! ! ! ! Yunha Kim! Gyeonggi Suwon International School ! IB DP Chemistry SL! Research Question! How is the solubility of sodium hydroxide (NaOH) in water affected by temperature? ! ! Introduction ! Sodium hydroxide is categorised as metal halide salt‚ composed of sodium and chlorine.! The ions present in the solid crystals of potassium chloride dissolve and gain mobility in water
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This experiment is also an introduction comparison of ionic and covalent bonding through real world testing. The properties of each type of bond will be exploited to the fullest during these tests. MATERIALS Materials required complete the lab: * 6 Watch Glasses * 2 g Calcium Chloride per parts A‚ B‚ C * 2 g Citric Acid per parts A‚ B‚ C * 2 g Phenyl Salicylate per parts A‚ B‚ C * 2 g Potassium Iodide per parts A‚ B‚ C * 2 g Sodium Chloride per parts A‚ B‚ C *
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Lab Experiment # 11 The common ion effect in dissolution and precipitation Equilibria Introduction: Dissolution and precipitation reactions are very important chemical reactions because it is applied to many aspects of the industries in medicine‚ food‚ water etc. The objectives of this laboratory experiment is to become familiar with dissolution and precipitation equilibria‚ develop a lab technique suitable for the determination of the solubility for a sparingly soluble salt‚ Ba(NO3)2 (s) at room
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Carlie Haeffner Qualitative Analysis March 20‚ 2015 The purpose of this lab is to identify unknown ions in a solution by using a type of chemical reaction called precipitate reactions. The key to finding which ions are present in a solution is to form a precipitate which makes the ions “come out” in a reaction (McNeil‚ 2013-2014). Water is used in these experiments to act as a solvent. Since water is a polar molecule‚ the slightly positive and negative charges will sometimes pull apart molecules
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temperature. (The solution contains undissolved solute in equilibrium with the solution.) Since calcium hydroxide is only slightly soluble in water‚ it is a difficult base to classify. It is often assumed that since calcium hydroxide has a low solubility that it is a weak base. But‚ don’t forget that it contains hydroxides ions‚ which automatically makes it a strong base! In fact‚ the pH of a saturated calcium hydroxide solution is about 12.4. Thus we can classify a saturated solution of calcium
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indicating that calcium hydroxide has a low solubility in water. On the other hand‚ a value of 98.4 % error has been tabulated which indicates that there are both human and experimental errors which may have impacted the overall results. Introduction: Ksp is defined as the ratio of concentrations of dissolved ions and undissolved ions of a precipitate at equilibrium. This can also be expressed using the rate law equation. For example ‚ the solubility product of calcium hydroxide can be written
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Week-2-Solubility Name: ___________________________________________________ Section: ______________ For Instructor Use Only POST-LAB REPORT FOR THE SOLUBILITY EXPERIMENT I) Conclusion: Write the conclusions regarding your observations and results obtained from each part 2A‚ 2B‚ 2C
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Solubility Product Constant of an Organic Salt Note : The solubility of potassium hydrogen tartrate (KHT‚ 188.18g/mol) is 1.0g/162mL at 25C and 1g/16mL at 100C. KHT (s) K+(aq) + HT-(aq) Objective : Determine the solubility and solubility product constant by titration. Prelab Questions : (PL1) Calculate the solubility‚ in M‚ of potassium hydrogen tartrate at 25C and at 100C. (PL2) Write an expression for Ksp of potassium hydrogen tartrate. (PL3) Calculate the theoretical
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precipitates? 1 answer Oct 13‚ 2008 More results from answers.yahoo.com [DOC]Solubility Rules Lab 2 C12-1-02 umanitoba.ca/.../Solubility%20Rules%20Lab%20... University of Manitoba What do stalagmites and stalactites found in caverns have in common with the deposits found on old water ..... Which cations generally do not form precipitates? e Which Cations Generally Do Not Form Precipitates
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