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- 4.) For the following equilibrium reaction state what happens when the following reagents are added NaOH(aq) + HСІ(ад) + НОН(аq) + NaCI(aq)+д a.) Mg(ОН)2 b.) КCІ с.) KBr d.) Heat (A) e.) CH;CH,COH (an acid) f.) decrease in temp.8 Reactions between certain organic (alkyl) halides and water produce alcohols. Consider the overall reaction for t-butyl bromide (2-bromo-2-methylpropane). (CH3)3CBr(aq) + H2O(1) →(CH3)3COH(aq) + H*(aq) + Br "(ag) k[(CH3)3CB1]. The accepted mechanism for the The experimental rate law is rate = %3D reaction is shown below. (1) (CH3)3C-Br(aq) →(CH3)3C*(aq) + Br "(aq) [slow] (2) (CH3)3C*(aq) + H2O(1) →(CH3)3C-OH2*(aq) [fast] (3) (CH3)3C-OH2*(aq) →H*(aq) + (CH3)3C-OH(aq) [fast] a) Why doesn't H2O appear in the rate law? b) Write rate laws for the elementary steps. c) What intermediates appear in the mechanism? d) Show that the mechanism is consistent with the experimental rate law. ed to the of consumption of Ni. Which of the reactions given below is wrong? H3O*/H20 (A) MgBr + CO2 H2/Pt (B) CH;CH2CN CH;CH,NH2 heat NABH4 (C) HO OH/H20 (D) CI OH
- What is the major organic product of the following reaction? H,0/ heat HO2C. .co.CH .co.H HO,C HO HOC (A) (В) (C) (D)-1000 Decomposition Rezctions Carbon Reduction Reactions AH AS (kJ) (JK-mol) O 2 Ag,0(s) → 4 Ag(s) + O2(g) +62.2 +132.7 O 2 MgO(s) → 2 Mg(s) + O2(g) +1202.4 +216.7 1000- O 2 AlhO3(s) → 4 Al(s) – 3 02(g) +3351.4 +546.8 O 2 Fe2O3(s) → 4 Fe(s) – 3 O2(g) +1648 4 +5515 O 2 HgO(s) → 2 Hg(t) + 0,(g) +181.7 +286.8 2000- O 2 Cr,03(s) → 4 Cr(s)– 3 0,(g) 2269 4 +548.4 Temperature 3000 300 300 K 2000 Temperature ((K) Clear Graph The metals Mg and Al, like most metals in groups 1A, 2A, and 3A of the periodic table, cannot be obtained by chemical reduction with carbon at reasonable temperatures. What procesS Is used to obtain these metals from their ores? positiveConsider chemical reaction:- X +2Y+ az )XY2Z2 It is faund that mng the [X] quadaup the [2] oubles the hate -) doubling the Cx7 has no effect on the sate doulbl les the late dneponb Cx] (- what is -the fate seaction 9 2 Pse dict the reactants for the Tate determ inA step. what is the molecularlty of the rate-deter step. minir 2) Predict a Complete mechanism Ahat meets the aiteria por this reaction Indicate which is neccessory the slow step the intermediates •J need these answer within 30 min. Thank Xou, Pleaze Consider g reguest my
- 0.00130 molk (CH2)NH* POH = - log (u.8x 10-5) - log (0.8x 10-s) 4.50 + 20.0D = 214.50 x 10-3L log 0.00110 mols (CH)N 24.50 x 10-3L8) In the reversible reaction [Co(H20)s]"(aq) + 4CI (aq) E>[Co(H20)2CI4]* (aq) + 4H20(1), the initial color of the reaction mixture was pink. When concentrated HCl (aq) was added to the reaction mixture, the color changed to purple. Which reactant is purple and why? a) [Co(H2O)s]*(aq) is purple because it is a cobalt compound b) [Co(H20)s]**(aq) is purple because adding CI (as HCI) shifted the reaction towards products c) HCl is purple because adding it turned the reaction purple d) [Co(H2O),Cl4]*(aq) is purple because adding Cl (as HCI) shifted the reaction towards products 9) In the reversible reaction Fe * (aq) + SCN (aq) E → FESCN2* (aq), the reactants are yellowish and the product is red. Why are iron (III) nitrate and potassium thiocyanate used to create this reaction mixture? a) iron and thiocyanate are spectator ions b) iron and thiocyanate are colorless c) nitrate and potassium are spectator ions d) nitrate and potassium are purpleTwo successive reactions, A→B and B→C, haveyields of 73% and 68%, respectively. What is the overall percentyield for conversion of A to C?