Write the chemical reactions of `P_(4)O_(6)` with cold and hot water.

Answer

To write the chemical reactions of \( P_4O_6 \) with cold and hot water, we will consider each scenario separately.

### Reaction with Hot Water:
1. **Reactants**: \( P_4O_6 \) and hot water (\( H_2O \)).
2. **Products**: The reaction produces phosphoric acid (\( H_3PO_4 \)) and phosphine (\( PH_3 \)).
3. **Chemical Equation**:
\[ P_4O_6 + 6 H_2O \rightarrow 4 H_3PO_4 + PH_3 \]

### Reaction with Cold Water:
1. **Reactants**: \( P_4O_6 \) and cold water (\( H_2O \)).
2. **Products**: The reaction produces phosphonic acid (\( H_3PO_3 \)) and diphosphorus pentoxide (\( H_4P_2O_5 \)).
3. **Chemical Equation**:
\[ P_4O_6 + 2 H_2O \rightarrow 2 H_3PO_3 + H_4P_2O_5 \]

### Summary of Reactions:
- With hot water:
\[ P_4O_6 + 6 H_2O \rightarrow 4 H_3PO_4 + PH_3 \]
- With cold water:
\[ P_4O_6 + 2 H_2O \rightarrow 2 H_3PO_3 + H_4P_2O_5 \]