Use the periodic table to answer the question.

Question

Which comparison is correct?

(1 point)
Responses

H
2
S
is a stronger acid than
H
C
l
cap h sub 2 cap s is a stronger acid than cap h cap c l

H
F
is a stronger acid than
H
C
l
.
cap h cap f is a stronger acid than cap h cap c l.

N
H
3
is a stronger acid than
H
F
.
cap n cap h sub 3 is a stronger acid than cap h cap f.

P
H
3
is a stronger acid than
N
H
3
.
cap p cap h sub 3 is a stronger acid than cap n cap h sub 3.
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Answer 1

To determine which comparison is correct regarding acid strength, we need to look at the acidity of the compounds involved:

1. H₂S vs. HCl: HCl (hydrochloric acid) is a strong acid that dissociates completely in water. H₂S (hydrosulfuric acid) is a weak acid. Therefore, H₂S is not a stronger acid than HCl.

2. HF vs. HCl: While HF (hydrofluoric acid) is a weak acid, HCl is a strong acid. Thus, HF is not a stronger acid than HCl.

3. NH₃ vs. HF: NH₃ (ammonia) is actually a weak base, and HF is a weak acid. HF would be the stronger acid compared to ammonia. Therefore, NH₃ is not a stronger acid than HF.

4. PH₃ vs. NH₃: PH₃ (phosphine) can act as a weak acid, while NH₃ is primarily a base. However, PH₃ is a weaker acid than NH₃. Therefore, PH₃ is not a stronger acid than NH₃.

Based on this analysis, all the provided comparisons are incorrect. No correct comparison can be marked based on the provided options.