Which comparison is correct?

Question

(1 point)
Responses

NH3 is a stronger acid than HF.
NH 3 is a stronger acid than HF.

H2S is a stronger acid than HCl.
H 2 S is a stronger acid than HCl.

HF is a stronger acid than HCl.
HF is a stronger acid than HCl.

PH3 is a stronger acid than NH3.

Answer 1

To evaluate the comparisons:

1. NH3 (ammonia) vs. HF (hydrofluoric acid): NH3 is actually a weak base, while HF is a weak acid. HF is stronger than NH3 as an acid. Therefore, NH3 is not a stronger acid than HF.

2. H2S (hydrosulfuric acid) vs. HCl (hydrochloric acid): HCl is a strong acid, while H2S is a much weaker acid. Hence, H2S is not a stronger acid than HCl.

3. HF vs. HCl: HCl is a stronger acid than HF because it completely dissociates in solution, while HF only partially dissociates. Therefore, HF is not a stronger acid than HCl.

4. PH3 (phosphine) vs. NH3 (ammonia): PH3 is a weaker base than NH3, and weak bases are typically also weak acids. NH3 is more basic than PH3, meaning PH3 is less acidic than NH3. Thus, PH3 is not a stronger acid than NH3.

Based on the analysis, none of the comparisons provided are correct.