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Question
Use the periodic table to answer the question.



Which comparison is correct?

(1 point)
Responses

PH3
is a stronger acid than NH3
.
cap p cap h sub 3 is a stronger acid than cap n cap h sub 3.

HF
is a stronger acid than HCl
.
cap h cap f is a stronger acid than cap h cap c l.

H2S
is a stronger acid than HCl
cap h sub 2 cap s is a stronger acid than cap h cap c l

NH3
is a stronger acid than HF
.
cap n cap h sub 3 is a stronger acid than cap h cap f.
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3 answers

To evaluate the statements regarding the strengths of the acids, we can refer to their properties and typical behavior of these compounds in water.

  1. PH3 (phosphine) vs. NH3 (ammonia): NH3 is a weak base, and while PH3 is a poor acid, it is generally considered weaker than NH3 in terms of acidity. Therefore, this statement is not correct.

  2. HF (hydrofluoric acid) vs. HCl (hydrochloric acid): HCl is a strong acid, while HF is a weak acid due to strong hydrogen bonding and its ability to dissociate less effectively in water. Thus, HF is not a stronger acid than HCl, making this statement not correct.

  3. H2S (hydrosulfide) vs. HCl: HCl is a strong acid, and H2S is a weak acid. In this case, HCl is significantly stronger than H2S. This statement is not correct.

  4. NH3 vs. HF: NH3 is a weak base, and HF is a weak acid. But NH3 is definitely not stronger than HF. Therefore, this statement is also not correct.

Based on these comparisons, none of the provided options accurately describe the acid strengths. Thus, the answer is that none of the comparisons are correct.

what is most acurate

Based on the relative strengths of the acids mentioned, here’s the accurate assessment of each:

  1. PH3 is a stronger acid than NH3: This is not correct. NH3 (ammonia), while a weak base, is stronger than PH3 as an acid.

  2. HF is a stronger acid than HCl: This is not correct. HCl (hydrochloric acid) is a strong acid, while HF (hydrofluoric acid) is a weak acid.

  3. H2S is a stronger acid than HCl: This is not correct. HCl is a strong acid, and H2S (hydrosulfide) is much weaker.

  4. NH3 is a stronger acid than HF: This is not correct. NH3 is a weak base, and HF is a weak acid, but HF is stronger than NH3 in terms of acidity.

Given these options, none of the statements are correct. However, the strongest acids in the list provided are HCl and HF, with HCl being the strongest. If you need to choose based on accuracy, the focus should be on HCl as the strongest acid listed, with all other comparisons marked as incorrect.