please explain if I did this right and could you please is explain more about th
ID: 544443 • Letter: P
Question
please explain if I did this right and could you please is explain more about the Pka, and 1and 2.
thank you!
10. Which of the following substances has a zero dipole moment? a. CO2 b. Cl2C-CCl2 c. HOCH2CH2OH d. HCl2CCHCl2 All have zero dipole moments. Answer: 11. Which of the following would represent the strongest acid? Ka= 2.5 x 10 b. pk14.5 . PK 4.60 Ka= 2.5 x 10-1 Answer: 12. Which of the following substances would exhibit hydrogen bonding CH3-CH2-NH2 CH3-CH2-OH CH3-C-OH d. CH3-C-H e. a, b, and c f. All would exhibit hydrogen bonding. Answer: 13. The structure for Vitamin K which is involved in blood clottiExplanation / Answer
Answer: 11, the correct answer will be D, Ka = 2.5 * 10-1
Because there is a relation between the pKa and Ka of the acid. Ka represents the acidity of the acid, Greater the Ka greater will be the acidity while pKa have the inverse relation with the acidity of the acid.
Hence greater the pKa, weaker be the acid.
Answer (12): E, all compounds can form hydrogen bonds, reason for hydrogen bonding are as follows,
hydrogen bonding depends upon the polarity of the compound, greater the polarity of the compound greater will be the tendency of H bonding, and polarity is decided by the presence of functional groups with high electronegativity like F, O, N etc.
If there is a lone pair of electron associated with the elements like N and O, then there will be greater tendency to form hydrogen bonding.
The polarity of elements decides the probability of H bonding, and the bonding is between the charged portion of a compound with form a polar covalent bond the hydrogen. IT is generally weaker than ionic bonds.
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