Consider the reaction: 2 Cr3+ (aq) + 3 104" (aq) + 10 OH(aq) --> 2 CrO42-(aq)...
Consider the reaction: CrO42−(aq) + HSO3−(aq) → Cr3+(aq) + SO42−(aq) When this equation is balanced in acidic solution, the coefficient for water will be __________, and the number of electrons transferred will be __________. Multiple Choice a. 5, 6 b. 2, 3 c. 2, 1 d. 2, 4 e. 3, 3
3. For the reaction 103 (aq) + 51(aq) + 6H*(aq) → 312(aq) + 3H2O(1) the rate of disappearance of I (aq) at a particular time and concentration is 2.6 x 10-' mol/(L · s). What is the rate of appearance of 12(aq)? A) 4.3 10-' mol/(L •s) B) 7.8 x 10-3 mol/(L • s) C) -1.6 x 10 mol/(L • s) D) 1.6 x 10' mol/(L •s) E) 6.4 x 10^'mol/(L •s) 4. For the first-order reaction 1/2 N2O4(g) →...
Consider the following reaction in aqueous solution: 5 Br−(aq) + BrO3−(aq) + 6 H+(aq) ---> 3 Br2(aq) + 3 H2O(l) i) The equation that relates the rate expressions for this reaction in terms of the disappearance of Br−, BrO3− and the formation of Br2 and H2O is (Choose the correct letter.): NOTE: { } is being used to represent the molar concentration. A. R = -1/5{ Δ Br - }/ Δ t = -1/1{ Δ BrO 3- }/ Δ t...
Consider the following reaction at 298K. 2 Cr3+ (aq) + 2 r (aq) →→2 Cr2+ (aq) + 12 (8) Which of the following statements are correct? Choose all that apply. n=4 mol electrons delta Gº < 0 OK<1 Eºcell < 0 The reaction is product-favored. Consider the following reaction at 298 K. 3 Fe3+ (aq) + Cr(s) – → 3 Fe2+(aq) + Cr3+(aq) Which of the following statements are correct? Choose all that apply. OK<1 n= 3 mol electrons E°...
Consider the following reaction at 298K. Cr3+ (aq) + 3 Cr2+ (aq) Cr (s) + 3 Cr3+ (aq) Which of the following statements are correct? Choose all that apply. The reaction is reactant-favored. Eocell > 0 K > 1 n = 2 mol electrons delta Go > 0
3) Consider the reaction: 2 ClO2 (aq) + 2 OH-(aq) à ClO3- (aq) + ClO2- + H2O (l) The rate of this reaction is given by: Rate = D[H2O] Dt (a) Give three equivalent expressions for the rate of this reaction in the boxes below: (6 pt) Rate = Rate = D[H2O] = = = Dt Exp [ClO2], M [OH-], M Initial Rate (M/s) 1 0.0125 0.1200 4.32 x 10-3 2 0.0125 0.1600 5.76 x 10-3 3...
Consider the following reaction at 298 K. 3 Cr3(a) Cr(s)>3 Cr(aq) Cr (aq) Which of the following statements are correct? Choose all that apply. E cell0 The reaction is reactant-favored. n 3 mol electrons Odelta Go0 Consider the following reaction at 298K. 2 Cr3+ (a Zn (s2 Cr2* (aq)+ Zn2* (aq) Which of the following statements are correct? Choose all that apply O K<1 cell 0 Odelta Go0 OThe reaction is product-favored On-5 mol electrons
The rate of a chemical reaction can be measured as the rate of appearance of any of the products or as the rate of disappearance of any of the reactants. These relative rates of reaction are related through the stoichiometry of the overall reaction. For example, the rate of the reaction shown below can be determined by measuring the initial rate of disappearance of I, -A[I']/At. CIO3 (aq)91 (aq)+ 6 Ht (aq) 31 3 (aq)CI(aq) 3H20 If the initial rate...
For the reaction [H](M) 2.36 CH, OH(aq) + H+ (aq) + C- (aq) CH, Cl(aq) + H2O(1) the value of [H*] was measured over a period of time. Given the data in the table, find the average rate of disappearance of H+ (aq) for the time interval between each measurement. Interval: Os to 34.0 1 (s) 0 34.0 57.0 2.14 2.02 120.0 1.85 reaction rate: M/S Interval: 34.0 sto 57,0 s reaction rate: M/s Interval: 57.0 s to 120.0 s...
1) Calculate the OH- concentration at equilibrium in the following reaction: NH3 (aq) + H2O (l) -> NH4+ (aq) + OH- (aq) (Kb = 1.8 x10^(-5). (a) 1 x10^(-14) M (b) 2.7 x10^(-3) M (c) 7.2 x10^(-6) M (d) None of the above 2) Which of the following pH values indicates the most basic solution? (a) pH=12 (b) pH=4 (c) pH=8 (d) pH=9 3) Which of the following pH values indicate the most acidic solution? ( (a) pH=11 (b) pH=2...