Question

When$P$reacts with caustic soda, the products are$PH_{3}$and $NaH_{2}PO_{2}.$ This reaction is an example of.

• A. Oxidation
• B. Reduction
• C. Oxidation and reduction (Redox)
• D. Neutralization

Answer 1

Answer: (C)

Oxidation and reduction (Redox)

Answer 2

$\overset{0}{P_{4}} + 3NaOH + 3H_{2}O \rightarrow \underset{\begin{aligned} & \text{Sodium} \\ & \text{hypophosphite} \end{aligned}}{3NaH_{2}PO_{2}} + \overset{- 3}{PH_{3}}$.

It shows oxidation and reduction (Redox) properties.