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Below is the equation for a nucleophilic substitution reaction and some experimental data.
CH3CH2Br + CH3COO- ⇌ CH3CH2CO2CH3 + Br- ΔH=-75 kJ/mol
Rate = k [CH3CH2Br][CH3COO-]
Which reaction energy profile would be the best representative of the data provided?
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- 6. Complete reaction scheme below indicating reagents, catalysts and conditions, and side product trigil bezinslog si6101fon 290b 1l (b Senines levirba 6 gaubong nasamots gniwollot ads to doinW 01 sniowl (6 CH3 40 CH3 Scansgowi (d Ege nodie) ( nsgyxo (b NO₂ 19m02 2i gniwollet sits to mainW II HOWhich of the following nucleophilic substitution reaction will not likely to happen? NH2 + NH2 CH3 SCH3 + CI .CI + CHSCH, H,ö: OH + HI Na* -CN CN + NalIn the following substitution reaction: the rate does not depend on type of X [Co(NH3)5H20]3+ + Xn-rightwards arrow with blank on top [Co(NH3) 5X]3-n + H2O True or false
- Select the starting material(s) (SM) that would be expected to give Q as the major elimination product. H;CO", HOCH3 SM -Ph Q Br Ph Ph Br Ph Br I II III II I and II I and III ||Which products are most likely to form in this reaction? NH2 H2N NaNH2 NH2 liq. NH3 II O1, II & II O II & II O1& || OI & IIList the following in increasing order of nucleophilic strength. CH3COO-, H2O, CH3O-, OH-, CH3CH20-
- For the Reaction: NH3+ H2O = NH4+ OH- When adding NH3+ phenolphthalien+ HCl What stress is applied and what direction does the equilibrium shift? When adding NH3+ phenolphthalien+ NH4Cl What stress is applied and what direction does the equilibrium shift? When adding NH3+ phenolphthalien+ NaOH What stress is applied and what direction does the equilibrium shift? When adding NH3+ phenolphthalien+ HCl What stress is applied and what direction does the equilibrium shift?6) The substitution reaction below to produce 1-iodobutane was performed using 1-bromobutane at a 0.1 M concentration and sodium iodide at a 0.1 M concentration. What would the rate law be for the reaction below? How would you expect the rate of the reaction to change if a 0.2 M concentration of sodium iodide was used? How would you expect the rate constant to change? Explain. Nal (0.1 M) Br acetone (0.1 M)The bromination of aceton is acid –catalyzed. CH3COCH3 + Br2 + H+ ---------> CH3COCH2Br + 2H+ + Br- The rate of disappearance of bromine was measured for several different concentrations of acetone, bromine, and H+ ion at a certain temperature. A B C [ CH3COCH3] [Br2] [ H+] Rate of disapperance [ Br2] 0.30 0.050 0.050 5.7 x 10 -5 0.30 0.10 0.050 5.7 x 10 –5 0.30 0.050 0.10 1.2 x 10 -4 0.40 0.050 0.20 3.1 x 10 -4 Write the rate law. Find the rate constant. Determine the half-life of the reaction if the [A]o = 0.50M ; [B]o = 0.40 M; [C]o = 0.6 M. ( Half-life is based on over all order of the reacaction)
- Q15 Which of the given species or reaction steps, involved in a Grignard reaction, is not correct? Here, the species can be a reactant, intermediate, transition state, product, or byproduct. aj MgBr b) H₂0 Br :05 H *MgBr H HCH3 CH3 Br- Br2 CH2CI2 CH3 CH3 H3C H3C Br Electrophilic addition of bromine, Br2, to alkenes yields a 1,2-dibromoalkane. The reaction proceeds through a cyclic intermediate known as a bromonium ion. The reaction occurs in an anhydrous solvent such as CH2C12. In the second step of the reaction, bromide is the nucleophile and attacks at one of the carbons of the bromonium ion to yield the product. Due to steric clashes, the bromide ion always attacks the carbon from the opposite face of the bromonium ion so that a product with anti stereochemistry is formed. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions CH3 CH3 Br- .CH3 .CH3 H3C H3C :Br :Br:2) Rank these molecules by their SN2 reaction rate. If a difference in reaction rate is hard to predict, you may group molecules with similar reactivity. CI CI Br CI CI A D E B