Amino acid D has pK of 4.7. What is the ratio of [D-]/[D] at pH 4.7? (a) 0.1 (b) 1 (c) 10 (d) 100 Can someone tell me the answer and also explain the concept
most stoble radical? а) cl; c HCH, Cu, c ) на C = CHсце, b) CH3 CH3 CHCHą d)CH2 = CHCHC HS
What is the approximate pk, for the weak acid. (d) Excess hydroxide ion (c) Equivalence point pH (b) Buffer region ta) Weak acid a) Weak acid 12 14 1 8 10 Volume of NaOH (ml.) Titration curve for the titration of a weak acid with a strong base.
What is the relationship between the following organic compounds? CI HCH HCAH a) Structural isomers b) Stereoisomers c) Geometric isomers d) No isomerism exists
pH What is the approximate pK, for the weak acid. 14T (d) Excess hydroxide ion 12- 10 (c) Equivalence point 8 6- (b) Buffer region 4 2 (a) Weak acid 0+ 0 2 4 6 8 10 12 14 16 Volume of NaOH (mL) Titration curve for the titration of a weak acid with a strong base. Answer:
, //3-10 oth pK, of HAc and pK, of NH, . H, О are 4. 74. Calculate the pl of the fol- lowing solutions: (a)0. 10 mol L HAc (c)0. 15 mol L NH,CI (a.15 mol L-1 NaAc (b)0. 10 mol L NH H,O
, //3-10 oth pK, of HAc and pK, of NH, . H, О are 4. 74. Calculate the pl of the fol- lowing solutions: (a)0. 10 mol L HAc (c)0. 15 mol L NH,CI (a.15 mol...
If the Ky of an acid is 7.45 x 10-10, what is the pK ? 7.45 2.25 6.38 9.13 0 -7.45
Match the following structures to the appropriate pK, valne A. CICH2COOH B. BrCH2COOH C. ChCHCOOH D. ICH COOH E. F CCOOH 2.86 0.28 Report problem Hint Solution Guided Solution
9 of 10 The pK, values for the dibasic base B are pKo 2.10 and pK2 7.57. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.70 M B(aq) with 0.70 M HCI(aq). (a) before addition of any HCI (b) after addition of 25.0 mL of HCI Number (c) after addition of 50.0 mL of HcI Number (d) after addition of 75.0 mL of HCIn Number (e) after addition of 100.0 ml...
35) What is the mass of a 0.150 mole sample of sulfur? A) 4.68 g B) 0.208 g C) 5.17 g E) 4.81 g D) 214 g 36) Lithium oxide can be produced by the reaction shown below. If a manufacturing company wants to make 25.0 g of Li20, what mass of Li is necessary? [Molar masses: Li, 6.94 g/mol; 0, 16.00 g/mol] 4Li(s) + O2(8) 2Li2O(S) A) 0.0861 g Li B) 2.903 g Li C) 23.2 g Li D)...