therefore is less reactive than haloalkane towards nucleophilic substitution reaction. 2. Haloalkanes react with KCN to form alkyl cyanide as main product while AgCN form isocyonide. Ans. KCN is‚ predominantly ionic compound and provide cyanide ion : C N in solution. The attack mainly takes place through lone pair of electron on carbon atom due to high electron density and not through nitrogen atom since C-C bond is more stable than C-N bond. AgCN: is mainly a covalent compound therefore‚ nitrogen
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produce iodide ion (I-) and dehydroascorbic acid‚ as shown in the following equation: [IMAGE] + I2(aq) -----------> + 2H+(aq) + 2I-(aq) Ascorbic acid (Vit. C) Dehydroascorbic acid However‚ since iodine is only slightly soluble in water‚ ascorgic acid should not be titrated directly by a standard iodine solution‚ since the end point of titration is not o obvious. Instead‚ back titration will be employed. The titration of a reducing agent with iodine to produce iodide ion is
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already reach the boiling point that gives off water vapor. The reaction gives the product of water vapor which is a gas. 2.) The formation of precipitate -When a solution of lead nitrate is poured into a solution of Potassium iodide a yellow precipitate of lead iodide is formed. 3.) Collision Theory Illustration 1.2 -The following hypothetical chemical reaction illustrates the collision of the molecules of two gases‚ A2 and B2‚ to form another compound of AB. - Furthermore‚ the colliding
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The stopper is removed carefully from the conical flask and 2 mL of the manganese sulfate solution is added‚ discharging the reagent from the tip of a pipette put well below the water surface. Stopper is replaced. 3. Similarly‚ 2 mL of the alkaline-iodide solution is introduced. 4. The stopper is placed in the bottle‚ be sure that no air becomes entrapped. Some overflow may occur. The content is mixed thoroughly by inversion and rotation. Manganese hydroxide is precipitated and will settled on standing
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Determination of Chlorine and Iodine in Water I. Introduction The purpose of this laboratory was to determine the amount of chlorine and iodine in a sample of water by titration using a starch indicator and to standardize a sodium thiosulfate solution. Chlorine is added to municipal water supplies to purify it enough to become safe to drink. Iodine is also added to water when people camp or go hiking in the back country where they cannot bring purified water along. Chlorine and iodine are
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ELECTRONEGATIVITY This page explains what electronegativity is‚ and how and why it varies around the Periodic Table. It looks at the way that electronegativity differences affect bond type and explains what is meant by polar bonds and polar molecules. If you are interested in electronegativity in an organic chemistry context‚ you will find a link at the bottom of this page. What is electronegativity Definition Electronegativity is a measure of the tendency of an atom to attract a bonding pair
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Complete and submit Essay 4 (BIO201 LESN 10 Essay 4 N)‚ as instructed below: 1. A patient is admitted for electroconvulsive treatment (ECT). The physician orders the neuromuscular blocking agent metocurine iodide (metubine) to reduce trauma by relaxing skeletal muscles. Explain the process of muscle contraction and how a neuromuscular blocking agent‚ such as metubine‚ would interfere with muscle contraction. According to the Mayo Clinic website electroconvulsive treatment is the use of an electrical
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reaction. The conversion of 1-butanol to 1-bromobutane relies on sulfuric acid which plays two important roles. First‚ it protonates the alcohol of 1-butanol to form an oxonium ion which is a good leaving group. Secondly‚ it produces the hydrobromic acid‚ the nucleophile‚ which attacks 1-butanol causing the oxonium ion to leave and forming 1-bromobutane. However‚ using sulfuric acid in this experiment has several downsides. First‚ it poses a huge safety hazard as it can cause severe burns. Secondly
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#8: Ionic Reactions Purpose: In this lab we will work with aqueous solutions of ionic substances and determine if they are soluble. If the solution appears milky than it is known as a precipitate reaction‚ meaning it is soluble‚ and that the ions separated and became surrounded by water. Precipitates in this experiment are electrically uncharged. To identify which compounds are soluble or insoluble we can check the chart in the textbook containing solubility rules and tables. The goal of
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unstable and inconvenient to work with‚ you will titrate vitamin C samples in this lab with potassium iodate‚ KIO3‚ in the presence of an acidic iodide solution. The iodate ion oxidizes iodide to iodine. IO3Ϫ ϩ 5IϪ ϩ 6Hϩ 1 3I2 ϩ 3H2O Notice that an equilibrium is established. To ensure that the reaction goes to completion‚ it is necessary to use excess iodide and to make the solution acidic. The iodine formed in this reaction immediately
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