NR-no reaction occurred‚ X-not tested (there should be no reaction) The redox reactions took place: Cl2 (aq) + 2Br-(aq) → Cl-(aq)+ 2Br2(aq) Cl2 (aq) + 2I-(aq)→ Cl-(aq)+ 2I2(aq) Br2 (aq) + 2I-(aq)→ Br-(aq)+ 2I2(aq) Answer questions: Part A 1. Ba2+ > Sr2+ > Ca2+ > Mg2+ 2. The ranking above does show a trend in the periodic table. Ba2+ forms the most precipitates in the experiment and shows up on the bottom of the period table‚ while Mg2+ forms the least precipitates and therefore
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EXPERIMENT NO. 6 DETERMINATION OF THE MOLAR VOLUME OF A GAS AND THE UNIVERSAL GAS CONSTANT Salve‚ Ryan Angelo TAB3‚ Group 6‚ Mr. John Kevin Paulo Biadomang Tabor‚ Frances Hermilyn March 8‚ 2013 ------------------------------------------------- I. Abstract This experiment is working with the ideal gas law‚ which is the summation of Boyle’s Law‚ where pressure is inversely proportional to volume‚ Charles’ Law‚ where the volume is directly proportional to temperature and Avogadro’s Law‚ where
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EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of
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ESTIMATION OF IRON IN IRON ORE-SPECTROPHOTOMETRIC METHOD By: Taylor Villari Experiment conducted on 7/22/13 Components of each test tube examined in the spectrophotometer Trial | Volume of Iron solution (mL) | Micrograms of Iron | Volume of 10% sodium acetate | Volume of 0.1% o-phenanthroline | Volume of water (mL) | 1(blank) | 0.0 | 0.0 | 1.0 mL | 1.0 mL | 8.0 mL | 2 | 1.0 mL | 10 | 1.0 mL | 1.0 mL | 7.0 mL | 3 | 3.0 mL | 30 | 1.0 mL | 1.0 mL | 5.0 mL | 4 | 5.0 mL | 50 | 1.0 mL
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Synthesis of Salicylic Acid and Potentiometric Determination of its Purity and Dissociation Constant ------------------------------------------------- Abstract The purpose of the study is to synthesize salicylic acid from the ester‚ methyl salicylate‚ and determine the acid’s dissociation constant and purity. The ester was converted to salicylic acid by base hydrolysis. The products were refluxed and recrystallized‚ to ensure maximum purity‚ and filtered‚ dried‚ and weighed. The melting point
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2014) August 2013 Sa Su Mo Tu We Th 1 3 4 5 6 7 8 10 11 12 13 14 15 17 18 19 20 21 22 31 31 Admin First Day : Teachers’ First Day: Tuesday 20th of August Saturday 24th of August Fr 2 9 16 23 September Sa Su Mo Tu 1 2 3 7 8 9 10 3 2013 We Th Fr 4 5 6 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 October 2013 Sa Su Mo Tu We Th 1 2 3 5 6 7 8 9 10 12 13 14 15 16 17 19 20 21 22 23 24 26 27 28 29 30 31 Fr 4 11 18 25 Term 1 First Day for students: Grades 9 to
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roamed Earth’s land? Father Stanley Rother was one of those heroes. Fr. Stanley’s “superpower” was his pure devotion to God and the people he worked hard serving. Fr. Stanley came face to face with great risk himself‚ but in this case is him going to the peripheries risking his life for the benefit of others. The only difference between Fr. Stanley and the superheroes seen in the blockbusters is Fr. Stanley didn’t wear a cape. Fr. Stanley had a simple beginning coming from a small town in Oklahoma
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spectrophotometric analysis of copper sulphate Introduction: In the modern usage. The term spectroscopy includes a large group of techniques which differ widely in their mode of application and information they reveal. As a useful working definition‚ spectroscopy is a study of interaction of electromagnetic radiation with matter in the experiment it means it’s the usage of ultra-light to measure the absorbance of the copper sulpate. The regions of the electromagnetic spectrum immediately adjacent
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use of spectrophotometer. The preparation of four known concentration of KMnO4 was done namely‚ 2.00×10-4M‚ 1.50×10-4M‚ 1.00×10-4M‚ 5.00×10-5M‚ respectively and is to be place on the spectrophotometer with the unknown and distilled water for the determination of each concentration’s absorbance. As the concentration is proportional with the absorbance of the solution‚ to determine the concentration of the solution is possible by drawing a graph of concentration against the absorbance. At the end of the
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Determination of Formation Constant‚ Kf of Thiocyanoiron(III)‚ FeSCN+2 Dr. Fred Omega Garces Chemistry 201 Miramar College Chemical Equilibrium: Finding the Formation Constant of FeSCN2+ (aq) Fe3 +(aq) iron(III) + SCN–(aq) FeSCN2+(aq) D thiocyanate thiocyanoiron(III) kf = € FeSCN2 + [ ] Fe +3 [SCN− ] [ ] Objective The purpose of this experiment is to determine the constant formation‚ Kf‚ (equilibrium constant) for the formation of thiocyanoiron(III)
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