Questions: Which of the following formula/name combinations is incorrect? HI(aq) hydroiodic acid H2S(aq) hydrosulfuric acid HClO3(aq) chloric acid H2SO3(aq) sulfurous acid H3PO3(aq) phosphoric acid

Which of the following formula/name combinations is incorrect? HI(aq) hydroiodic acid H2S(aq) hydrosulfuric acid HClO3(aq) chloric acid H2SO3(aq) sulfurous acid H3PO3(aq) phosphoric acid
Transcript text: Which of the following formula/name combinations is incorrect? $\mathrm{HI}(a q)$ hydroiodic acid $\mathrm{H}_{2} \mathrm{~S}(\mathrm{aq})$ hydrosulfuric acid $\mathrm{HClO}_{3}(\mathrm{aq})$ chloric acid $\mathrm{H}_{2} \mathrm{SO}_{3}(a q)$ sulfurous acid $\mathrm{H}_{3} \mathrm{PO}_{3}(a q)$ phosphoric acid
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Solution

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Solution Steps

Step 1: Identify the Correct Names for Each Chemical Formula

To determine which formula/name combination is incorrect, we need to know the correct names for each given chemical formula:

  1. HI(aq): This is hydroiodic acid. The name is correct.
  2. H\(_2\)S(aq): This is hydrosulfuric acid. The name is correct.
  3. HClO\(_3\)(aq): This is chloric acid. The name is correct.
  4. H\(_2\)SO\(_3\)(aq): This is sulfurous acid. The name is correct.
  5. H\(_3\)PO\(_3\)(aq): This is phosphorous acid, not phosphoric acid. The name is incorrect.
Step 2: Identify the Incorrect Combination

From the analysis above, the incorrect formula/name combination is for H\(_3\)PO\(_3\)(aq), which is named phosphorous acid, not phosphoric acid.

Final Answer

The incorrect formula/name combination is:

\[ \boxed{\text{H}_3\text{PO}_3(\text{aq}) \text{ phosphoric acid}} \]

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