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- What is the percent dissociation of 0.150 M triethylamine? (The Kb value for triethylamine is 5.25 × 10-4.) a. 5.92 %b. 5.75 %c. 39.4 %d. 5.75 x 10-30 %Noke Lew has a different unknown salt containing one of the nine anions used in this lab. She tries all three classification reactions, but none of them give any reaction. Before she gives up in despair, which confirmation test should Noke choose to try? Group of answer choices SO42- SO32- CO32- PO43- NO3- NO2- halides (Cl-, Br-, I-)Choose the best reagents from the list provided below for carrying out the following conversion. Match the reagent with the step number. HCl (aq), Zn(Hg) KMnO4, H3O+ CH3Cl, AlCl3 HNO3, H2SO4 Cl2, FeCl3 fuming sulfuric acid
- In the following reaction 3 O2(g)----> 2 O3 (g) deltaS>0 deltaS<0 deltaS=0 none of the aboveHow to prepare 10% of sodium iodide in acetic acidWhich of the following reactions result in a positive ∆ Ssys? A. Pb(NO3)2 (aq) +KCl (aq) ---> PbCl2 (s)+ KNO3 (aq) B. HCl (g) + H2O (l) ---> HCl (aq) C. H2 (g) + I2 (g) ---> 2HI (g) D. 2H2O (g) ---> 2H2 (g) + O2 (g) E. H2O (g) ---> H2O (l)
- Prove that the Keq for the reaction between Pb2+ and HF is 12.4. (Ksp, PbF2 = 6.76 x 10-4 and dissociation constant of HF is 3.7 x 10-8)Which of the following can inhibit nitrification? 1. Low HNO2 2. High NH3 3. High NH4+ 4. pH < 5 5. Low HCO3- 6. High HNO2 7. High NO2Show how to accomplish the following conversion using reagents from the table.
- What is the reagent in this reaction? a. mCPBA, water, H+ b. H2, Pd c. NaBH4, water d. KMNO4What is the objective of the Qualitative Tests for carbonyls and Unknown Carbonyl experiment.Benzoic acid (C6H5C02H) has Ka =6.3 x 10-5 a) What is the value of Kb for the benzoate ion (C6H5C02-)? b) What is the h30+ concentration of a O, 10 mol/dm3 solution of benzoic acid? c) What is the pH of the solution in (b) above?