5. Suggest ways to make these compounds using conjugate addition of enol(ate)s. 0 0 co2Et Ph...
Which of the following compounds does not undergo conjugate
addition?
OH A. B. t) 0 C. 料 D. E. CN
b. NaH, CICHZUCH3 _ 5. Conjugate addition to a, B-unsaturated carbonyl compounds is characteristic of a. mild, reversible nucleophiles b. strong, irreversible nucleophiles c. wet oxidizing agents d. large weak electrophiles e. small strong electrophiles f. alkyllithiums rcle the bond below that does not absorb above 1400 cm? d. C=0 b. C=C a. C-H e. C=N c. C-o 7. Which regent below would effectively yield a nitrile from a benzenediazonium ion a. NaCN c. NaNH. e. NHANH
Select a good producing organzation and service -providing oragnzation of your choice. Suggest ways each organzation can make aggregate planning decision using the variables describe
1 . If a buffer solution is 0.260 M in a weak acid (?a=8.3×10−5)and 0.480 M in its conjugate base, what is the pH? pH= 2. If a buffer solution is 0.200 M in a weak base (?b=5.0×10−5) and 0.530 M in its conjugate acid, what is the ph 3. Phosphoric acid is a triprotic acid (?a1=6.9×10−3, ?a2=6.2×10−8 , and ?a3=4.8×10−13 To find the pH of a buffer composed of H2PO4 - (aq) ) and HPO4 2− (aq) , which...
What pH would you make the water layer in order to cause both compounds to dissolve in it? Water should have pH 4.5 - 9.5. Water should have pH 4.5 - 7.5. Water should have pH 6.5 - 9.5. Water should have pH 6.5 - 7.5. Part B What pH would you make the water layer in order to cause the acid to dissolve in the water layer and the amine to dissolve in the ether layer? What pH would...
3. You are asked to make a buffer solution with a pH of 3.40 by using 0.100 M HNO, and 0.100 M NaOH (aq). a. Explain why the addition of 0.100 M HNO2 to 0.100 M NaOH(aq) can result in the formation of a buffer solution. Include the net ionic equations for the reaction that occurs when you combine HNO2 (aq) and NaOH(aq). Determine the volume, in ml, of 0.100 NaOH(aq) the student should add to 100 mL of 0.100...
5. You need to make 500.0 mL of a buffer with a pH of 2.20. You have the following substances to work with: 0.100 M NH3 Solid NaN3 Solid NaClO2 0.100 M HClO2 Solid NH4Cl Solid Na2SO3 0.100 M HN3 Solid NaHSO3 Ka for HClO2 = 1.1x10-2 Kb for NH3 = 1.8x10-5 Ka for HN3 = 1.9x10-5 Ka1 for H2SO3 = 1.7x10-2 Ka2 for H2SO3 = 6.4x10-8 (Assume that the addition of solid does not change the volume of the...
Buffers and pH Changes Tube pH Before Addition pH After Addition PH Change 4,5 pH Water + Acid Water + Base Buffer + Acid Buffer + Base S.SoH s.sph Tors of SpH 2 7 8 H PH Hydrolysis of lonic Compounds 2 NaCl NHACI FeCl3 pH 4-5 5 pH 3-4 PH 1-2 PA Na2CO3 Prediction pH 10-11 pH Measurement Il Titration of Sodium Carbonate Formula of Compound: Nazlog pH 1 매 니 0.432 Mass of Compound: 0.004 Vol. pH PH...
Buffers are solutions designed to resist changes in pH from the addition of small amounts of acids or bases. Buffers are comprised of a solution of a weak acid with its conjugate base. When an outside base is added to the buffer, the weak acid in the buffer neutralizes the hydroxide ion of the base, thus retarding its ability to raise the solution's pH. When an outside acid is added to the buffer, the conjugate base of the buffer neutralizes...
Calculate the pka and ka given the pH.
Please show ALL steps
measured pH = cal, pKa = q. I 0 pH1 after 5 drops of NaOH-14- pH after 5 drops of HCl = gng BE SURE TO GET T 3) Buffer System with 2 ml acid + 20 ml conjugate base [B]/ [HB] = 10 BE SURE TO GET THIS CORRECT!! (use "H+H" Eq. above to calculate pKa) measured pH- 450 pH after addition of XS NaOH-10.00 dition of...