Exercise 2 - solutions Using molarities and concentrations 1. Calculate the number of moles of H2SO4 in 50 cm3 of a 0.50 moldm-3 solution. 2. Calculate the number of moles of FeSO4 in 25 cm3 of a 0.2 moldm-3 solution. 3. Calculate the mass of KMnO4 in 25 cm3 of a 0.02 moldm-3 solution. 4. Calculate the mass of Pb(NO3)2 in 30 cm3 of a 0.1 moldm-3 solution. 5. What is the molarity of 1.06g of H2SO4 in 250 cm3 of solution? 6. What is the molarity of 15.0 g of CuSO4.5H2O in 250 cm3 of solution
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Sign In | Sign Up StudyMode - Premium and Free Essays‚ Term Papers & Book Notes Essays Book Notes AP Notes Citation Generator More Bread Of Salt Analysis Essays and Term Papers Search Advanced Search Documents 1 - 20 of 775 Analysis of the Bread of Salt Story An Analysis of The Bread of Salt by NVM Gonzalez (In which irony had it once again.) *** Arturo Pérez-Reverte‚ in his exhilarating novel The Flanders Panel wrote‚ “There’s nothing more misleading than an obvious fact.” (Pérez-Reverte
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Experiment 8 Chemical Kinetics Abstract This experiment was done to determine the effects of the nature of the reactants‚ concentration‚ temperature‚ surface area and catalyst on the rate of chemical reactions. The nature of the reactants implies a difference if the reactants are aqueous or organic‚ acidic or basic or if they occur in the same phase or not. Acid-base reactions‚ formation of salts‚ and exchange of ions are fast reactions while reactions in which large molecules are formed
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alcohols with acid and with an oxidizing agent. Materials chemical safety goggles lab apron protective gloves test-tube rack eyedropper dropper bottles containing butan-1-ol butan-2-ol 2-methylpropan-2-ol potassium permanganate solution‚ KMnO4 (aq) (0.01 mol/L) concentrated hydrochloric acid‚ HCl (aq) (12 mol/L) (for teacher use only) Procedure 1) Put on your safety goggles‚ apron‚ and protective gloves. 2) Put 3 test tubes in a test-tube rack. From the dropper bottles‚ place
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reaction involving N2(g) and H2(g). If 24.0 mol of H2(g) react with excess N2(g)‚ how many moles of ammonia are produced? Show your work. N2+3H2=2NH3 24 mol of H2=8 mol of N2 produces 16 mol of ammonia 4. Name the following compound: KMnO4 Potassium permanganate 5. Balance the following equation: KBrO3(s) KBr(s) + O2(g) 2KBrO3(s) = 2KBr(s) + 3O2(g) 6. Write the formulas for silicon dioxide. SiO2 7. Complete and balance the following equation
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Oxidation of an Alcohol: Oxidizing Methoxybenzyl Alcohol to Methoxybenzaldehyde Using Phase-Transfer Catalysis PURPOSE OF THE EXPERIMENT Oxidize methoxybenzyl alcohol to methoxybenzaldehyde‚ using sodium hypochlorite as the oxidizing agent and tetrabutylammonium hydrogen sulfate as the phase-transfer catalyst. Monitor the progress of the reaction by thin-layer chromatography. BACKGROUND REQUIRED You should be familiar with extraction‚ evaporation‚ and thin-layer chromatography techniques
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DEHYDRATION OF 4-METHYLCYCLOHEXANOL PURPOSE Perform an acid-catalyzed dehydration of 4-methylcyclohexanol to produce 4-methycyclohexene. TECHNIQUES • Dehydration of an alcohol • Preparation of an alkene • Distillation • Unsaturation tests THEORY An acid-catalyzed dehydration is a common way to synthesize an alkene from an alcohol. Use of a strong acid like sulfuric or phosphoric acid serves to protonate the alcohol "OH" group‚ forming an H2O molecule that is a much better leaving group
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agent. Equipment and Materials: Chemical safety goggles Lab apron Protective gloves 3 test tubes Test-tube rack Eyedropper Dropper bottles containing the following Butan-1-ol Butan-2-ol 2-methylpropan-2-ol Potassium permanganate solution‚ KMnO4(aq) (0.01 mol/L) Concentrated hydrochloric acid‚ HCl(aq) (12 mol/L) *Alcohols are flammable and should be kept away for heat sources or sources of ignition. They also should be used in a well-ventilated area. *Concentrated hydrochloric acid is very
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Assignments in Science Class X (Term II) 4 Carbon and its Compounds IMPORTANT NOTES 9. Unsaturated organic compounds : Organic compounds in which a double or a triple bond exists between two carbon atoms in a carbon chain‚ are called unsaturated organic compounds. 10. Hydrocarbons : Organic compounds which contain only carbon and hydrogen atoms are called hydrocarbons. 11. Straight chain hydrocarbons : Hydrocarbons‚ in which all the carbon atoms are linked to one another in a straight chain
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of glucose are present in 540 g of glucose? 19. The empirical formula of a compound is CH2O. Its M.W is 90.Calculate the Molecular formula of the compound. 20. Calculate the Oxidation numbers of bold element in the following. A) K2Cr2O7 b) KMnO4 c) K2MnO4 d) C12H22O11 d)Cr2O3 e)CrO5 f)H2S2O8 g)CaOCl2 h)H2SO5 i)Fe3O4 j) N3H 21. What are the disproportionation reactions? Give examples. 22. State the first law of thermodynamics. 23. Is increase of entropy the criterion for spontaneity? Why
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