LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... 12. Explain the mechanism of dehydration of ethyl alcohol to ethylene. 13. Draw all the conformers of cyclohexane and explain their stabilities with potential energy diagram. 14. a) Write the mechanism for the reduction of CH3COOC2H5 by LAH. b) How will you prepare isobutyl alcohol using a Grignard ...
... 12. Explain the mechanism of dehydration of ethyl alcohol to ethylene. 13. Draw all the conformers of cyclohexane and explain their stabilities with potential energy diagram. 14. a) Write the mechanism for the reduction of CH3COOC2H5 by LAH. b) How will you prepare isobutyl alcohol using a Grignard ...
Chemical Reactions: Helpful Hints
... reaction. Just look for a change in the oxidation state of any atom in the reaction; if such a change occurs, it is a redox reaction. An important point to remember about oxidations and reductions: they must occur in concert they cannot occur separately. If one chemical loses its electrons (getting ...
... reaction. Just look for a change in the oxidation state of any atom in the reaction; if such a change occurs, it is a redox reaction. An important point to remember about oxidations and reductions: they must occur in concert they cannot occur separately. If one chemical loses its electrons (getting ...
Chapter 7: Thermochemistry
... Hess’s Law states: if a process occurs in stages or steps (even if only hypothetically), the enthalpy changes for the overall process is the sum of the enthalpy changes for the individual steps. VIII Standard Enthalpy of Formation The standard state (standard thermodynamic condition) of a solid or l ...
... Hess’s Law states: if a process occurs in stages or steps (even if only hypothetically), the enthalpy changes for the overall process is the sum of the enthalpy changes for the individual steps. VIII Standard Enthalpy of Formation The standard state (standard thermodynamic condition) of a solid or l ...
Chapter 5 Thermochemistry Notes File
... 1 atmosphere and the temperature of interest, usually 298 K (25ºC) ∆Hº where the superscript º indicates standard-state conditions Standard enthalpy of formation ∆Hfº = change in enthalpy for the reaction that forms 1 mole of the compound from its elements, with all substance in their standard state ...
... 1 atmosphere and the temperature of interest, usually 298 K (25ºC) ∆Hº where the superscript º indicates standard-state conditions Standard enthalpy of formation ∆Hfº = change in enthalpy for the reaction that forms 1 mole of the compound from its elements, with all substance in their standard state ...
Chemistry 12 – Unit 3 – Chapter 5 – Thermochemistry
... ∆H0reaction = Σ n∆H0f products - Σ n∆H0f reactants ∆H0rxn = [6 mol x ∆H0f of H2O(l) + 6 mol x ∆H0f of CO2(g)] – [2 mol x ∆H0f of C3H6(g) + 9 mol x ∆H0f of O2(g)] ∆H0rxn = [ 6 mol x(-285.8 kJ/mol) + 6 mol x (-393.5 kJ/mol) ] – [ 2 mol x (17.8 kJ/mol) + 9 mol x (0 kJ/mol)] ∆H0rxn = [ -1714.8 kJ + -236 ...
... ∆H0reaction = Σ n∆H0f products - Σ n∆H0f reactants ∆H0rxn = [6 mol x ∆H0f of H2O(l) + 6 mol x ∆H0f of CO2(g)] – [2 mol x ∆H0f of C3H6(g) + 9 mol x ∆H0f of O2(g)] ∆H0rxn = [ 6 mol x(-285.8 kJ/mol) + 6 mol x (-393.5 kJ/mol) ] – [ 2 mol x (17.8 kJ/mol) + 9 mol x (0 kJ/mol)] ∆H0rxn = [ -1714.8 kJ + -236 ...
CHEM 203 Topics Discussed on Nov. 20 Principle: protonation of
... Principle: the above reagents rely on the nucleophilic properties of the OH group to achieve conversion of alcohols into alkyl halides Principle: only primary and secondary alcohols are sufficiently nucleophilic to react with the above reagents. The OH group of tertiary alcohols is poorly nucleophil ...
... Principle: the above reagents rely on the nucleophilic properties of the OH group to achieve conversion of alcohols into alkyl halides Principle: only primary and secondary alcohols are sufficiently nucleophilic to react with the above reagents. The OH group of tertiary alcohols is poorly nucleophil ...
ppt
... acid, HCl(aq), was mixed with 50.0 mL of a 1.0 mol/L aqueous solution of sodium hydroxide, NaOH(aq), at 25.0 °C in a calorimeter. After the solutions were mixed by stirring, the temperature was 31.9 °C. (a) Determine the quantity of thermal energy transferred by the reaction to the water, q , Assume ...
... acid, HCl(aq), was mixed with 50.0 mL of a 1.0 mol/L aqueous solution of sodium hydroxide, NaOH(aq), at 25.0 °C in a calorimeter. After the solutions were mixed by stirring, the temperature was 31.9 °C. (a) Determine the quantity of thermal energy transferred by the reaction to the water, q , Assume ...
Thermochem ppt
... • compare the energy changes of different substances, perform calorimetry calculations, and describe the relationship between reactions using enthalpy terms. • represent thermochemical equations using different methods, and determine whether a reaction is exothermic or endothermic • calculate and us ...
... • compare the energy changes of different substances, perform calorimetry calculations, and describe the relationship between reactions using enthalpy terms. • represent thermochemical equations using different methods, and determine whether a reaction is exothermic or endothermic • calculate and us ...
spring semester review
... d) HNO2 + OH- ----> NO2- + H2O e) H+ + OH- ----> H2O 34. A solution of ammonia is titrated with hydrochloric acid. At the equivalence point, phenolphthalein will be what color? a) colorless b) pink c) red d) blue 35. The molar solubility of BaF2 is 7.5 x 10-3 mol/L. What is the value of Ksp for BaF2 ...
... d) HNO2 + OH- ----> NO2- + H2O e) H+ + OH- ----> H2O 34. A solution of ammonia is titrated with hydrochloric acid. At the equivalence point, phenolphthalein will be what color? a) colorless b) pink c) red d) blue 35. The molar solubility of BaF2 is 7.5 x 10-3 mol/L. What is the value of Ksp for BaF2 ...
TV RajanBabu Chemistry, 730 Autumn 1997
... Acidites of phosphonium and sulfonium compounds and ylides (for chemistry see later) Enols, enamines and metalloenamines in synthesis Mechanism of acid and base catalyzed enolization, kinetic vs thermodynamic control Detailed mechanism of -substitution of a carbonyl compound (e. g., bromination) Ca ...
... Acidites of phosphonium and sulfonium compounds and ylides (for chemistry see later) Enols, enamines and metalloenamines in synthesis Mechanism of acid and base catalyzed enolization, kinetic vs thermodynamic control Detailed mechanism of -substitution of a carbonyl compound (e. g., bromination) Ca ...
Name: Chem 22 Final exam Spring `00 What product is formed when
... e) addtion of a hydride ion and a proton more or less at the same time 18. Which of the following describes “reductive amination?” a) an aldehyde or a ketone + a tertiary amine + H2/zeolite b) an aldehyde or a ketone + ammonia or a primary or a secondary amine + ...
... e) addtion of a hydride ion and a proton more or less at the same time 18. Which of the following describes “reductive amination?” a) an aldehyde or a ketone + a tertiary amine + H2/zeolite b) an aldehyde or a ketone + ammonia or a primary or a secondary amine + ...
Chemistry 20H
... • We start with the mass percent of elements (i.e. empirical data) and calculate a formula. • Assume we start with 100 g of sample. • The mass percent then translates as the number of grams of each element in 100 g of sample. • From these masses, the number of moles can be calculated (using the atom ...
... • We start with the mass percent of elements (i.e. empirical data) and calculate a formula. • Assume we start with 100 g of sample. • The mass percent then translates as the number of grams of each element in 100 g of sample. • From these masses, the number of moles can be calculated (using the atom ...
Power Point Presentation
... Boyle’s definition of an element: Certain primitive and simple, or perfectly unmingled bodies; which not being made of any other bodies, or of one another, are the ingredients of which all those perfectly mixt bodies are immediately compounded, and into which they are ultimately resolved. Aristotle’ ...
... Boyle’s definition of an element: Certain primitive and simple, or perfectly unmingled bodies; which not being made of any other bodies, or of one another, are the ingredients of which all those perfectly mixt bodies are immediately compounded, and into which they are ultimately resolved. Aristotle’ ...