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Interpretation:
The range of
Concept Introduction:
It is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration.
If the value of
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Chapter 10 Solutions
Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
- The much-abused drug cocaine is an alkaloid. Alkaloids are noted for their bitter taste, an indication of their basic properties. Cocaine, C17H21O4N, is soluble in water to the extent of 0.17g/100mL solution, and a saturated solution has a pH = 10.08. What is the value of Kb for cocaine?arrow_forwardDraw dipeptide Arg-Thr at pH 6.0. Circle the six atoms that are restricted in one plane. Calculate its approximate pI assuming pKa for NH3+ is 10.0, pKa for COOH is 3.0, PKR for Arg is 12.0arrow_forwardWhat is the pH of a glycine solution in which the alpha-carboxyl group is one third dissociated? Given pka1=2.3, pka2=9.6arrow_forward
- Convert the following pH values in both [H+] and [OH-] values. (6 points) 1. pH = 3.95 [H+] = and [OH-] = 2. pH = 11.86 [H+] = and [OH-] = 3. pH = 4.00 [H+] = and [OH-] =arrow_forwardExample The reference range for blood pH is 7.35 – 7.42. What is this range expressed as [H+] in nmol l-1? Calculation: pH = - log [H+] 7.35 = - log [H+] [H+] = antilog -7.35 = 4.47 x 10-8 mol.l-1 = 44.7nmol.l-1 similarly: pH 7.42 = 38.0 nmol.l-1 Range [H+] = 38 – 44.7 nmol.l-1 If the blood pH decreases in an acidosis from 7.42 to 7.15, what is the change in [H+] in nmol.l-1? so this is example on the worksheet, but i still understand how to answer the question.arrow_forwardBenzene, C6H6, is an aromatic hydrocarbon that exists as a liquid at 298 K and 1 bar. The solubility of benzene in water, defined as the concentration of the saturated solution, is 2.23×10¬3 M at 298 K and 1 bar, and its standard Gibbs free energy of formation is AfG° (C6H6, ) = 124.3 kJ/mol. a. Calculate the standard Gibbs free energy change for the process of dissolution of benzene in water a. Find the chemical potential of the benzene solute standard state AFG° (C6H6, aq).arrow_forward
- Highlight your values of A,B,C and D. For your question: A mL of B mol/L sodium phosphate solution is combined with C mL of D mol/L calcium bicarbonate. (Calcium bicarbonate is soluble.) A mL B mol/L C mL D mol/L 75.0 ml 0.300 67.5 0.350 Before you begin your reaction, you must accurately produce 1.500 L of your sodium phosphate solution from sodium phosphate trihydrate solid. Write out a procedure to explain all the steps you will take in the lab when making the solution to ensure that your solution concentration is accurate. Please include calculations that show the required mass of solid. Also include the correct names of all equipment used.arrow_forwardFor the equilibrium below, pKa₁ = 7.9 and pKa2 = 10.1. At what pH is [HA] equal to [A²-]? H₂A H+ + HA 2H+ + A²- OpH = 7.9 pH 10.1 pH = 10.1arrow_forwardDraw an approximate titration curve of glycine. Label the approximate isoelectric point of the glycine on the curve and be sure to label the axis of the graph. Pk1 is 2.35 and pk2 is 9.78 for glycine.arrow_forward
- The pH of a 0.0082 M solution of HNO₃ isarrow_forwardCalculate the normality of a solution that contains 4.5 g of (COOH)2 in 3000 mL of solution? (Assume the (COOH)2 is to be completely neutralized in an acid-base * reaction.) 0.033 N O 0.33 N O 0.166 N O 0.0166 N 0.45 N O 0.045 N 000.0 OOarrow_forwardConsider the following pH titration curve of a diprotic acid. What is the approximate values for pka 1 and pka 2? the curve is attached below.arrow_forward
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