Part AA new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoproticweak acid, but because of security concerns, the actual chemical formula must remain top secret. The company is interested in the drug's K, value because only the dissociated form of thechemical is active in preventing cholesterol buildup in arteries.To find the pK, of X-281, you prepare a 0.079 mol L-1 test solution of X-281. The pH of the solution is determined to be 3.00. What is the pK, of X-281?Express your answer numerically.• View Available Hint(s)?pKa = 4.26 Part CUsing the Lewis concept of acids and bases, identify the Lewis acid and base in each of the following reactions:Co(NO3)3(s) + 6H2O(1)→Co(H20),³+ (aq) + 3NO3 (aq)(CH3),NH(g) + HF(g)→(CH3),NH2F(s)Drag the appropriate items to their respective bins.> View Available Hint(s)ResetHelpCo(NO3)3 (s)H2O(1)|(CH3)2NH(g)HF(g)Lewis acidLewis baseNeither

We have to identify the Lewis acid and bases from given set of reactions.

ewis concept of acids and bases, identify the Lewis acid and base in each of the following reactions: Co(NO3)3(s) + 6H20(1)→Co(H2O)," (aq) + 3NO3¯(aq) (CH3),NH(g) + HF(g)→(CH3),NH2F(s) ppropriate items to their respective bins. ailable Hint(s) Reset Help

ewis concept of acids and bases, identify the Lewis acid and base in each of the following reactions: Co(NO3)3(s) + 6H20(1)→Co(H2O)," (aq) + 3NO3¯(aq) (CH3),NH(g) + HF(g)→(CH3),NH2F(s) ppropriate items to their respective bins. ailable Hint(s) Reset Help

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Part A
A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic
weak acid, but because of security concerns, the actual chemical formula must remain top secret. The company is interested in the drug's K, value because only the dissociated form of the
chemical is active in preventing cholesterol buildup in arteries.
To find the pK, of X-281, you prepare a 0.079 mol L-1 test solution of X-281. The pH of the solution is determined to be 3.00. What is the pK, of X-281?
Express your answer numerically.
• View Available Hint(s)
?
pKa = 4.26

Part C
Using the Lewis concept of acids and bases, identify the Lewis acid and base in each of the following reactions:
Co(NO3)3(s) + 6H2O(1)→Co(H20),³+ (aq) + 3NO3 (aq)
(CH3),NH(g) + HF(g)→(CH3),NH2F(s)
Drag the appropriate items to their respective bins.
> View Available Hint(s)
Reset
Help
Co(NO3)3 (s)H2O(1)|(CH3)2NH(g)
HF(g)
Lewis acid
Lewis base
Neither

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