(a) H3O+ is a stronger acid than NH4+. The respective conjugate pair on the oxygen atom is bases are H2O and NH3. Due to electronegativity, the lone stable than the lone pair on the nitrogen atom.
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- The molecule (CH3)2N-PF2 has two atoms that can act as Lewis bases. With boron compounds, BH3 attachesto phosphorus, while BF3 attaches to nitrogen. Give your reasoning(4) Define Lewis acid/base versus Bronsted acid/base and describe the other two effects that influence acidity (hybridization and resonance)Choose the strongest acid from each group. (a) HClO, HBrO, HIO (b) HIO, HIO3, HIO4 (c) HIO, HBrO2, HBrO4
- Draw the Lewis-Acid base adduct with formal charges for the reaction of BH3 with THF10. The following Lewis structures for (a) HCN, (b) C3H;, (c) SnOz, (d) BF3, (e)HOF are incorrect. Explain what is wrong with each one and give a correct structure for the molecule. (Relative positions of atoms are shown correctly.) (a) H-ëN (b) HCC-H (c) 0-Sn-0 (d) :F B :F: (e) H-O-F:Hydrazine, N2H4 has Kb= 1.3E-6. Calculate the pH of 0.486M solution of N2H4.
- 1. As the number of oxygen atoms increases in any series of oxygen acids, such as HXO, HXO2, HXO3, which of the following is generally true? (A) The acid strength varies unpredictably. (B) The acid strength decreases only if X is a nonmetal. (C) The acid strength decreases only if X is a metal. (D) The acid strength decreases whether X is a nonmetal or a metal. (E) The acid strength increases.Give productArrange the oxides B2O3, Al2O3, BaO, CO2, Cl2O7, SO3 in order from the most acidic through amphoteric to the most basic (use arrows to indicate the order).
- The conjugate acid of H2O isA bond between CO and M, where M is a lewis acid, which forms M-CO. Draw the lewis strcutures and resonace structures for M-CO. Where M does not have no lone pairs, has one lone pair and two lone pairs.For the following five reactions: (i) Cl− + AlCl3 → AlCl4−(ii) (CH3)3N + HCl → (CH3)3NHCl(iii) OH− + H3O+ → 2H2O(iv) Co3+ + 6NH3 → Co(NH3)6(v) F− + SiF4 → SiF5− Identify the Lewis bases. Choose from the list below and enter the five letters in order. (e.g. ACEGI, BDFHJ, etc.) A) Cl− B) AlCl3 C) (CH3)3N D) HCl E) OH− F) H3O+ G) Co3+ H) NH3 I) F− J) SiF4