Chemistry Salt Analysis Cheatsheet Version 2.0 © 2008 Ankur Banerjee All Rights Reserved. Only important stuff for CBSE Class 12th Chemistry practical syllabus has been included‚ not everything. 2. WE + acidified K2Cr2O7 2 = sol 3 turns green 3. WE + acidified KMnO4 = pink colour of KMnO4 is discharged 4. Sulphide: Colourless gas with a smell of rotten eggs (H2S); turns lead acetate paper black 1. Sodium nitroprusside test: WE + sodium nitroprusside 4 = purple / violet colour 2. Lead acetate
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Chapter 17—Alcohols and Phenols SHORT ANSWER Drawing Instructions: Draw structures corresponding to each of the given names. 1. Draw: cis-4-tert-butylcyclohexanol ANS: 2. Draw: 3-methyl-2-buten-1-ol ANS: 3. Draw: 2-phenyl-2-propanol ANS: 4. Draw: glycerol ANS: 5. Draw: 2‚ 4‚ 6-trinitrophenol ANS: IUPAC Naming Instructions: Provide proper IUPAC names. 6. Name: ANS: (E)-2-ethylbut-2-en-1-ol 7. Name: HOCH2CH2OH ANS:
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flamed inoculating loop‚ the pure culture of unknown number 25 was added to the MR and VP tubes. Afterwards the proper reagents were added to each tube. Three drops of methyl red reagent were added to the methyl red tube where the results were observed immediately and properly recorded. Fifteen drops of VP reagent A were added to the VP tube and mixed properly. Then five drops of VP reagent B were added and mixed properly. The VP tube was observed 10 minutes‚ and results were recorded. The citrate test
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Lucas is a twenty six year old man who is quite tech literate and one of the few who care about the servers running the silo. An ideal candidate for Bernard’s head of IT replacement‚ he soon finds himself in a secret room with a listing of all the rules
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bloodstream. The experiment will be performed by adding amylase to starch solutions under varying conditions of temperature and pH. After an appropriate time‚ the solutions will be tested for the presence of sugar. By adding Benedict’s reagent to the various solutions‚ the presence of sugar will be determined depending on colour change. No colour change after several minutes mean no sugar is present. Ultimately‚ the affects of temperature and pH of digestion of starch will be
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smallest things in life gave the people hope of a better life in Lily‚ so even the Woodpecker gave Lily hope for a better future. 7. Plot: The story take place in Lily‚ Arkansas. Cullen Witter is a senior at high school and his best friend is Lucas Calder. Cullen is an average kid; he is bullied and has a crush on the hottest girl at school. His brother‚ Gabriel Witter is probably the smartest person he knows. Cullen and his brother have a very loving relationship. Summer was near and school
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Your answer : a. maltose. Correct answer: e. starch and carbohydrate. 2. Which of the following is true of enzymes? Your answer : b. They are used up in the reaction. Correct answer: c. Their activity can be affected by temperature and pH. 3. The reagent IKI tests for the presence of Your answer : c. glucose. Correct answer: a. starch. 4. Which of the following is not true of controls? Your answer : b. With a positive control‚ a positive result is expected. Correct answer: d. A negative result with
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Chapter 17: Alcohols and Phenols C O O H H sp3 alcohol pKa~ 16-18 phenol (aromatic alcohol) pKa~ 10 Alcohols contain an OH group connected to a saturated carbon (sp3) Phenols contain an OH group connected to a carbon of a benzene ring O H C C H C C O chemistry dominated by the keto form 76 enol keto H O H R O H R O R R O O R’ water alcohol R S H ether R S R peroxide R S S R’ thiols thioether disulfides
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He misses the peculiar look Lucas is giving him having seen the entire exchange in the hallway. The concern‚ the tension‚ the way Smackle fled. Zay doesn’t see Lucas but Lucas see’s it all. Including the way he looks now. A look that Zay has described to him so many times. The look he gets when he’s about to do something. They signs are all there. Clenched jaw‚ balled fists‚ tense shoulders‚ flared nostrils. Breaking out into a jog he chases Zay. Zay is unaware of Lucas following him. His feet are
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ALCOHOLS Alcohols are compounds in which one or more hydrogen atoms in an alkane have been replaced by an -OH group. For the purposes of UK A level‚ we will only look at compounds containing one -OH group. For example: Primary alcohols In a primary (1°) alcohol‚ the carbon which carries the -OH group is only attached to one alkyl group Some examples of primary alcohols include: Secondary alcohols In a secondary (2°) alcohol‚ the carbon with the -OH group attached is joined directly to
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