Question

The disproportionation products of ortho phosphorous acid are:

• A. \( \text{H}_3\text{PO}_4, \text{PH}_3 \)
• B. \( \text{H}_3\text{PO}_2, \text{H}_3\text{PO}_3 \)
• C. \( \text{H}_3\text{PO}_4, \text{HPO}_3 \)
• D. \( \text{H}_3\text{PO}_2, \text{P}_2\text{H}_4 \)

Hint:

In disproportionation reactions, the same element gets both oxidized and reduced in different products.

Answer 1

The Correct Option is A

Step 1: Understanding Disproportionation Reaction Disproportionation reactions involve a single species undergoing both oxidation and reduction. Ortho phosphorous acid (\( H_3PO_3 \)) disproportionates as follows: \[ 4H_3PO_3 \rightarrow 3H_3PO_4 + PH_3 \] Step 2: Identifying the Products Here, phosphoric acid (\( H_3PO_4 \)) is the oxidation product and phosphine (\( PH_3 \)) is the reduction product.