p Block ElementsmediumNUMERICAL

What is the calculated formal oxidation state of the phosphorus atom in pyrophosphorous acid ()?p Block Elements Chemistry Question

Question

What is the calculated formal oxidation state of the phosphorus atom in pyrophosphorous acid ($H_4P_2O_5$)?

Answer: 3

💡 Solution & Explanation

Using the formula $H_4P_2O_5$: $4(+1) + 2(x) + 5(-2) = 0 \implies 4 + 2x - 10 = 0 \implies 2x = 6 \implies x = +3$.

💬
Still have doubts about this question?
Send it to our AI chemistry tutor on WhatsApp — gets answered in minutes
Ask on WhatsApp →

Practice 22,000+ questions like this

AI-adaptive practice, video lectures, and full JEE Advanced Chemistry content — all in one place.

JEE Advanced · JEE Mains · NEET · IChO · AP Chemistry