oxygen in the water. If acid isn’t added the solution will quickly start to turn yellow due to formation of MnO2. If this happens anyway‚ add some more sulphuric acid to reverse the process. The solution should be clear with a slight green tinge. Chapter 15 – Volumetric analysis (Redox titrations) To prepare a standard solution of ammonium iron sulphate and use this solution to standardise a solution of potassium permanganate. Potassium permanganate (KMnO 4 ) is a powerful oxidizing agent and is
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------------------------------------------------- A[edit] * Ailee * AJ (BEAST/B2ST) * Ajoo * Alexander Lee Eusebio * Ali * Amber Liu (f(x)) ------------------------------------------------- B[edit] * Bada * Bae Suzy (miss A) * Bae Seul Ki * Baek Ji Young * Bang Yong Guk (B.A.P) * Bi (Rain) * Bizniz * BoA * Bom (2NE1) * Byul * Brian Joo * Baek Ah Yeon * Boom * Bora (Sistar) * Byun Baekhyun (EXO-K) -------------------------------------------------
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Title Laboratory Techniques and Measurements Purpose The purpose of this experiment is to determine mass‚ length‚ temperature‚ volume‚ and density of objects and liquids using common measuring devices and algebraic formulas. The metric system‚ the most common set of measurements used in science‚ which includes meters‚ liters‚ Celsius‚ and grams will be used. Procedure The following items were used within the experiment: (1) Metric ruler with centimeter (cm) and millimeter (mm)‚ (1)
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Milenge Milenge (Hindi: मिलेंगे मिलेंगे; English: We Will Meet‚ We Will Meet) is a Bollywood film that was released on 9 July 2010.[3] Inspired by the 2001 romantic comedy Serendipity‚[4] the movie is directed by Satish Kaushik and stars Shahid Kapoor and Kareena Kapoor in their fifth film together after Imtiaz Ali’s Jab We Met (2007).[5] Other members from the cast include Satish Shah‚ Aarti Chhabria‚ and Delnaaz Paul. Contents [hide] * 1 Plot * 2 Cast * 3 Production * 4 Reception
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LITERATURE BY MUNSHIPREMCHAND Munshi Premchand lived from 1880 to 1936 and can justly lay claimto the title of the best Hindi fiction writer ever. He was born on 31July 1880 in a small village‚ Lamhi‚ near Varanasi. His parents namedhim Dhanpat Rai. He started writing at a young age. Initially‚ hewrote in Urdu. Later‚ he wrote only in Hindi. Munshi Premchand was the son of a postal clerk. He lost his motherwhen he was very young. Just 7 years. And his at the age of 14‚ helost his father. With his
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Clear bubbles; bubbles did not fizz. HCl and BTB- Color changes to orange after the BTB is added. NH3 and 1 drop of BTB- Turned dark blue. HCl and Blue Dye - Turned dark blue Blue Dye and NaOCl- Turned dark blue then aqua blue. NaOCl and KI- Turned yellow. KI and Pb(NO3)2- Cloudy yellow. NaOH and phenolphthalein- Dark pink. HCl and phenolphthalein- Clear w/ No bubbles. NaOH and AgNO3 – Olive green. AgNO3 and NH3- Clear w/ Bubbles NH3 and CuSO4- Cloudy aqua blue. Questions: A. Suppose a
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Mix it thoroughly until the solids are well dissolved. After Na2S2O3 solution is made‚ standardize the solution against KBrO3. 25.00-mL aliquots of KBrO3 solution is pipetted into three 250-mL Erlenmeyer flasks. Place about 2-3g of KI (potassium iodide) in each flask and 5mL of 3M H2SO4 (sulfuric acid) as following. Titrate with Na2S2O3 right away until the solution changes its color to pale yellow. The expression to this reaction is presented as BrO3-(aq) + 6I-(aq) + 6H+(aq) → Br-(aq)
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Title of Experiment: An Activity Series Lab MSDS: Copper‚ Cu(s) Stability- Stable. Incompatible with strong acids‚ active halogen compounds‚ chlorine‚ fluorine‚ iodine‚ bromine‚ ammonia. May react explosively with strong oxidizing agents. Toxicology-Dust may cause respiratory irritation. Personal Protection- Suitable ventilation if handling powder. Zinc‚ Zn(s) Stability-Stable. Incompatible with amines‚ cadmium‚ sulfur‚ chlorinated solvents‚ strong acids‚ strong bases. Air and moisture
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Quantitative Analysis: % Copper in an Ore May 3‚ 2006 Abstract: In this experiment we were given an unknown sample of ore. Using the spectrophotometric analysis and the electrogravimetric analysis‚ we found the unknown percentage of copper in the unknown sample of ore was to be 17.6% by mass. Introduction: Chemical analysis takes place under two different scenarios. In one case‚ you need to find out the chemical identity of some material. The first kind of analysis‚ in which the chemical
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Redox Titration Analysis of a Commercial Bleach A. Purpose ! ! ! To review oxidation-reduction reactions and their stoichiometry. To learn the concept and technique of redox titration. To determine the percent (m/v) of an active ingredient‚ sodium hypochlorite (NaOCl)‚ in a commercial bleaching agent. B. Theoretical Background Whereas acid-base reactions involve the transfer of a proton‚ oxidation-reduction or redox reactions involve the transfer of electrons from one substance to
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