COMEDK · Chemistry · 22. p Block Elements (Group 15, 16, 17 & 18)
Given are \(\mathrm{H}_3 \mathrm{PO}_2, \mathrm{H}_3 \mathrm{PO}_3, \mathrm{H}_3 \mathrm{PO}_4\) and \(\mathrm{H}_4 \mathrm{P}_2 \mathrm{O}_7\). Which of the above oxacids results into two series of salts?
- A \(\mathrm{H}_3 \mathrm{PO}_4\)
- B \(\mathrm{H}_3 \mathrm{PO}_2\)
- C \(\mathrm{H}_4 \mathrm{P}_2 \mathrm{O}_7\)
- D \(\mathrm{H}_3 \mathrm{PO}_3\)
Answer & Solution
Correct Answer
(D) \(\mathrm{H}_3 \mathrm{PO}_3\)
Step-by-step Solution
Detailed explanation
The number of series of salts formed by an oxoacid is equal to its basicity, which corresponds to the number of ionizable hydrogen atoms attached to oxygen atoms (P-OH groups). For \(\mathrm{H}_3\mathrm{PO}_2\) (hypophosphorous acid), the structure is…
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