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.

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

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

NH3
is a stronger acid than HF

1 answer

To determine which comparison is correct, let's evaluate each statement based on the properties of acids.

  1. PH3 is a stronger acid than NH3: This is correct. PH3 (phosphine) can donate protons (H+) more easily than NH3 (ammonia), making PH3 a stronger acid.

  2. H2S is a stronger acid than HCl: This is incorrect. HCl (hydrochloric acid) is a stronger acid than H2S (hydrosulfuric acid).

  3. HF is a stronger acid than HCl: This is incorrect. HCl is a stronger acid than HF (hydrofluoric acid).

  4. NH3 is a stronger acid than HF: This is incorrect. HF is a weak acid but is stronger than NH3, which is a base.

Based on this analysis, the correct comparison is:

PH3 is a stronger acid than NH3.

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