Iodide The Analysis of a Chemical Reaction Introduction This experiment is based upon a discovery made through the isolation of PbI2 using a particular scientific method‚ which studies ratios of lead to iodine. Precipitation reactions occur when oppositely charged ions attract and form an insoluble ionic solid. This experiment examines the precipitation reaction between lead (II) nitrate‚ Pb(NO3)2‚ and potassium iodide‚ KI. Both are dissolved in water and the reaction between these solutes will produce
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BIOL2220 Lab 3: Hill Reaction Introduction In 1937‚ Robert Hill discovered that isolated chloroplasts can generate oxygen when they are illuminated in the presence of a suitable electron acceptor‚ even in the absence of carbon dioxide. This finding was a landmark in the study of photosynthesis because it established that the source of the electrons used in the light reactions is water. It also confirmed that the released oxygen is derived from water instead of carbon dioxide. In chloroplasts
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Lab #5: Grignard Reaction – Synthesis of Triphenylmethanol John Kang Chem 152L Performed: 7/20/04 Date submitted: ________________ Lab Partners: Sang Lee‚ Vicky Lai TA: John Stanko Abstract: This experiment explored the synthesis of triphenylmethanol through the use of Grignard reagents. The percent yield of the product was 10% on a relatively humid day. The melting point was calculate to be 127.2oC with a literature value of 162oC. An IR spectrum of the product was taken and used
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Summary This experiment will measure the rate of oxidation of iodide ions by persulphate ions to derive the rate law for the reaction. Starch will be added to the reaction to facilitate the measure of time during the reaction. The reactant solutions will contain (NH4)2SO4 and KI‚ represented as: (NH4)2S2O8 + 2KI -> I2 + (NH4)2SO4 + K2SO4 This can be simplified to: S2O82- + 2I- -> I2 + 2SO42- These equations can only be carried out and be visible after the iodine has completely
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Kelly Freas Date of Experiment: October 28‚ 2012 Period 2 Honors Chem Purpose: The purpose of this lab is to observe the reactions of halide ions with different reagents by mixing them together. Analyze data to determine characteristic reactions of each halide ion. Infer the identity of unknown solutions. Materials: * 0.1 M AgNo3 * 0.1 M NaCl * 0.1 M NaF * 0.2 M KBr * 0.2M Kl * 0.2 M Na2S2)3 * 0.5 M Ca(NO3)2 * 3% Starch solution * 5% NaOCl ( commercial bleach)
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Chapter 1 Chemical Reactions and Equations Q.1. Why should magnesium ribbon be cleaned before burning in air ? Ans: Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Q.2. Write the balanced
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Bhubaneswar in the past few years has come out of its dormancy and has shown considerable development in sectors that have placed it as one of the fastest growing cities in the nation. With the IT majors and MNCs opening up‚ the very face of the working class has now changed. Once the ‘hamara Bajaj’ family (with dad driving mom and two kids out in the unfailing trustworthy two wheeler) is now slowly transforming to mom’s shopping in malls ‚groceries from retail shops and super busy dad’s driving
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to your desired amount of peanut butter and jelly/jam‚ place both pieces facing each other together so that the peanutbutter and jelly/jam are touching. Now time to grab your plate and place the sandwich on there. You will need to get your napkin too PB&J can get a little messy. Peanutbutter and jelly is also very enjoyable with a side of chips. There you have it‚ now its time to enjoy this delicious sanwich that you have taken the time to prepare. Next
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during the MACAPAGAL-ARROYO administration (January 2001 - June 2010). Despite this growth‚ however‚ poverty worsened during her presidency. The AQUINO administration is working to reduce the government deficit from 3.9% of GDP‚ when it took office‚ to 2% of GDP by 2013. The government has had little difficulty issuing debt‚ both locally and internationally‚ to finance the deficits. The AQUINO Administration reduced public debt to below 50% of GDP and obtained several ratings upgrades on sovereign debt
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Hamlet: Act 2 Scene 2 - Compare Hamlet’s Reaction to Arrival of Rosencrantz and Guildenstern and To the Players Yin Choi Compare Hamlet’s reaction to the arrival of Rosencrantz and Guildenstern with his reaction to the arrival of the Playyers. Account for his reactions. By comparing Hamlet’s reaction to the arrival of Rosencrantz and Guildenstern with his reaction to the arrival of the Players‚ we can observe the different perspectives of Hamlet’s character. His reaction to the arrival of
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