Which of the following are weak bases in aqueous solution? 1. NH3 2. Ро 3- 3. OH 4. CIO 5. НСНО2 O 1, 2, and 4 only O 1 and 5 only O 1, 2, 3, and 4 only O 1 and 4 only O 3 only
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- 3. Give the chemical reactions that show why solutions ofAl(NO3)3,Zn(NO3)2, andNH4NO3have thepHvalues that you found. Please type answer note write by hend.Which of the following is a representation of the ion product of water? H2O(ℓ)+H2O(ℓ)⇌H3O+(aq)+OH−(aq)H2O(ℓ)+H2O(ℓ)⇌H3O+(aq)+OH-(aq) Kw=[H+][OH−][H2O]Kw=[H+][OH-][H2O] Kw=[H+][OH−][H2O]2Kw=[H+][OH-][H2O]2 Kw=[H2O]2Kw=[H2O]2 Kw=[H+][OH−]Kw=[H+][OH-] Kw=[H+][H2O]8. Due to hydrolysis, a zinc sulfate solution has?A) Weakly acidic reaction of the mediumB) Strongly acidic reaction of the mediumC) Neutral reaction of the environmentD) Weakly alkaline reaction of the mediumE) Strongly alkaline reaction of the medium
- 5.00 g NaOH and 5.00 g Ba(OH)2 were used to prepare 1L solution each. Which solution will be more basic? (MM NaOH=40, Ba(OH)2=171.3)Calculate the pOH in 0.3582 M H3PO4. The stepwise dissociation constants are Ka1 = 7.50e-3 and Ka2 = 6.20e-8Calculate either [H3O+] or [OH−] for each of the solutions at 25 °C. Solution A: [OH−]=1.95×10−7 M; [H3O+]= Solution B: [H3O+]=8.57×10−9 M; [OH−]=
- Consider HA (a weak acid) and HB (a weak base).11) A 0.10 M solution of the weak base D has a pH of 11.45. Determine the Kb and pKb of DWhich of the following aqueous solutions will have the highest pH at 25oC?For NH3, Kb = 1.8 10–5; for C2H3O2–, Kb = 5.6 10–10. A) 2.0 M NaOHB) 2.0 M NH3C) 2.0 M HC2H3O2D) 2.0 M HClWhat is [H3O+] in a solution of 0.075 M HNO2 and 0.030 M NaNO2?HNO2(aq) + H2 O(l) ⇌ H3 O+(aq) + NO2−(aq) Ka = 4.5 × 10−5
- H2X2O3 is a weak acid. What is [X2O32–] in a 0.44 M H2X2O3 solution? A. 1.1 x 10–7 M B. 0.60 M C. 7.1 x 10–7 M D. 1.5 x 10–5 M E. 7.1 x 10–11 M F. 0.11 M G. 1.1 x 10–11 M [Ka1 = 1.1 x 10–7; K a2 = 7.1 x 10–11]Which of the following is the hardest base? S2- F- I- PR3Calculate the pOH of a 6.0 M solution of HCl. 0.78 14.78 13.22 -0.78 -0.90