On hydrolysis, of calcium phosphide, how many moles of phosphine are formed ?

Explanation

To determine how many moles of phosphine are formed during the hydrolysis of calcium phosphide, we need to follow these steps:

### Step 1: Write the chemical equation for the hydrolysis of calcium phosphide.
The formula for calcium phosphide is \( \text{Ca}_3\text{P}_2 \). When it reacts with water, it produces calcium hydroxide and phosphine gas. The unbalanced chemical equation is:

\[ \text{Ca}_3\text{P}_2 + \text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2 + \text{PH}_3 \]