Rank the following acids from lowest to highest pka.

Question

BlackTom AI · Accepted Answer

The task presents a rank- ordering question for acids by their pKa values. However, the data provided is incomplete: there are no actual option texts listed in the answer_options field, and the only presented item is a single string within the answer field: "A < D < B < C". Since we cannot see the full set of choices to compare, we cannot validate whether this ranking is correct relative to the missing alternatives. What the given ordering would mean conceptually: in acid–base chemistry, pKa is a measure of acidity, with lower pKa indicating a stronger acid. If we take the statement A < D < B < C at face value, this would imply that acid A has the smallest pKa (strongest among the four), followed by acid D, then acid B, and finally acid C with the largest pKa (weakest among the four). In other words, the strength order from strongest to weakest would be A > D > B > C in terms of acidity magnitude, and the corresponding pKa values would satisfy pKa(A) < pKa(D) < pKa(B) < pKa(C). Because the actual options are not shown, we cannot assess possible misconceptions such as: - Assuming alphabetical order corresponds to acidity without structural information (e.g., a stronger electron-withdrawing group near the acidic hydrogen may drastically lower pKa regardless of letter label). - Confusing pKa comparisons across different functional groups or solvent conditions (pKa can vary with solvent; often pKa is given in water, but some contexts use DMSO or others). - Misinterpreting the inequality notation: A < D < B < C refers to pKa values, not to a qualitative statement about which acid is inherently stronger without numeric support. If the full list of options were present, a robust analysis would proceed by: - Identifying the functional groups and substituents in each acid, noting electron-withdrawing or electron-donating effects, resonance stabilization, hybridization, and inductive effects. - Comparing pKa trends within the same family (e.g., carboxylic acids vs. alcohols vs. thiols) and across different families only when data or context permits. - Checking whether any intramolecular hydrogen bonding, solvation effects, or other stabilizing interactions could alter expected acidity. In summary, with the current incomplete data, we can interpret the given string A < D < B < C as a proposed ranking of pKa values, but we cannot confirm its correctness without the full set of options and supporting structural details. If you can provide the missing answer_options list (the actual structures or names corresponding to A, B, C, and D), I can walk through each choice and justify why each is correct or incorrect in detail.

CHEM 51C LEC A: ORGANI... Quiz 4

Rank the following acids from lowest to highest pka.

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Question at position 29 What distinguishes a weak acid from a strong acid?Weak acids completely dissociate into ions in solutionWeak acids have higher acidity than strong acidsWeak acids release more hydrogen ions in water than strong acidsWeak acids only partially ionize in water

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