1. In the reaction between BF3 and NH3, NH3 is the
| A. | Lewis base | |
| B. | Lewis acid | |
| C. | Lewis structure |
2. HCl and HNO3 have the same strength in aqueous solutions. This is an example of the leveling effect.
a) True
b) False
3. In the reaction between BF3 and NH3, NH3 is the
| A. | nucleophile | |
| B. | electrophile | |
| C. | protophile |
4. An amphoteric substance can act as an acid or base
a) True
b) False
5. For a solution that has pH = 9.33, the [OH-] is
| A. | 4.67 | |
| B. | 4.7 x 10-10 | |
| C. | 2.1 x 10-5 |

1. In the reaction between BF3 and NH3, NH3 is the A. Lewis base B. Lewis...
Identify the Lewis acid and Lewis base in each reaction. 1) BF3 + NH3 ⇌ F3BNH3 2) Fe3+(aq) + 6 H2O(l) ⇌ Fe(H2O)63+(aq) * In Reaction (1), BF3 is the [ Select ] ["Lewis base", "Lewis acid"] and NH3 is the [ Select ] ["Lewis acid", "Lewis base"] . * In Reaction (2), Fe3+(aq) is the [ Select ] ["Lewis acid", "Lewis base"] and H2O(l) is the [ Select ] ["Lewis acid", "Lewis base"] .
which of the combination of substances below constitute a Lewis acid-base reaction? a) PH3+ H+ b) Ag+ + NH3 c) BF3 + NH3 d) CH3CH2OCH2CH3 +AlCl3 I'm stuck between a and b, but I am very confused because both seem to be lewis acids and bases to me
12. Which is the major product of the reaction shown? (a) (b)
(c) (d) 13. What are all of the possible products formed in the
following reaction? (choose all correct answers) (a) (b) (c) (d)
(e) (f) 14. The three compounds below can form a carbocation in the
presence of H2O and H2SO4. Which ones will form the same
carbocation? (a) I and II (b) I and III (c) II and III (d) all
three will form the same carbocation...
Question Completion Status: QUESTION 10 Select the Lewis acid and Lewis base in this reaction. Cu2+(aq) + 6 NH3(aq) - Cu(NH3162 (aq) Cu2+ is the Lewis acid, and NH3 is the Lewis base, NH3 is a base, but there is no acid NH3 is the Lewis acid, and Cu?" is the Lewis base None of the above QUESTION 11 The following combination of species will result in buffer solution a. HCO3 and cog-2 True False QUESTION 12 The complex lon...
#5 Lewis Acid and Lewis Base 1. For each of the following reactions, draw the Lewis dot structure for each reactant and product. Identify each reactant as a Lewis acid or a Lewis base. a. CH3CH2CH2CH2CH2OH + CF3COOH – CH3CH2CH2CH2CH2OH2* + CF3COO- b. CH3CH2CH2CH2Br + CH30 CH3CH2CH2CH2OCH3 + Br (the O is between the last 2 C) C. CH3CHCICH2CH3 + NH2 CH3CHCHCH3 + NH3 + Cl- (for this problem only consider the new bond between N and H) d. BF3...
Draw the product of the Lewis acid-base reaction. Label the electrophile and nucleophile. H20 draw structure . (select) (select) <>
Identify the Lewis acid and Lewis base in each reaction. 1) Zn2+(aq) + 4 NH3(l) ⇌ Zn(NH3)42+(aq) 2) H2O + SO3 ⇌ H2SO4 * In Reaction (1), Zn2+(aq) is the and NH3(l) is the . * In Reaction (2), H2O is the and SO3 is the .
Equilibrium constants can be measured for the dissociation of Lewis acid-base complexes such as the dimethyl ether complex of BF3, (CH3)20+BF3. The value of K (here Kp) for the reaction is 0.17 at 125 °C. (CH3)20+BF3(g) =BF3(g) + (CH3)20(g) Is BF3 a Lewis acid or a Lewis base? Lewis acid Lewis base Correct A Lewis acid is an electron pair acceptor. B has an incomplete octet in BF3 and, as an electron deficient species, is an electron pair acceptor in...
a Equilibrium constants can be measured for the dissociation of Lewis acid-base complexes such as the dimethyl ether complex of BF3, (CH3)20-BF3. The value of K (here Kp) for the reaction is 0.17 at 125 °C. (CH3)20BF3 (8) # BF3 (8) + (CH3)2O(g) Is BF3 a Lewis acid or a Lewis base? Lewis acid Lewis base Correct b Is (CH3)20 a Lewis acid or a Lewis base? Wisited ewis acid Lewis base Correct c If you place 1.2 g of...
a Equilibrium constants can be measured for the dissociation of Lewis acid-base complexes such as the dimethyl ether complex of BF3, (CH3)20-%BF;. The value of K (here K) for the reaction is 0.17 at 125 °C. (CH3)20BF3 (8) =BF3 (8) + (CH3)2O(g) Is BF3 a Lewis acid or a Lewis base? Lewis acid Lewis base Correct b Is (CH3)20 a Lewis acid or a Lewis base? Lewis acid Lewis base Correct C If you place 1.1 g of the complex...