`PH_3` and `NH_3` on separately reacting with bleaching powder produce respectively

Options

A. P and `N_2`
B. `PCI_3` and `NCI_3`
C. `PCI_3` and `N_2`
D. `PCI_5` and `NCI_3`

Answer

To solve the question regarding the reactions of PH₃ (phosphine) and NH₃ (ammonia) with bleaching powder (Ca(OCl)₂), we will analyze each reaction step by step.

### Step 1: Understanding Bleaching Powder
Bleaching powder, chemically known as calcium oxychloride (Ca(OCl)₂), acts as an oxidizing agent. It can oxidize various substances, including phosphine and ammonia.

**Hint:** Recall the chemical formula of bleaching powder and its properties as an oxidizing agent.

### Step 2: Reaction of PH₃ with Bleaching Powder
When phosphine (PH₃) reacts with bleaching powder, it undergoes oxidation. The main product formed is phosphorus trichloride (PCl₃).

**Chemical Reaction:**
\[ 3 PH_3 + 4 Ca(OCl)_2 \rightarrow 3 PCl_3 + 4 Ca(OH)_2 + 2 Cl_2 \]

**Hint:** Identify the oxidation state changes that occur during the reaction.

### Step 3: Reaction of NH₃ with Bleaching Powder
When ammonia (NH₃) reacts with bleaching powder, it also undergoes oxidation. The main product formed is nitrogen gas (N₂) along with the formation of calcium hydroxide and chlorine gas.

**Chemical Reaction:**
\[ 2 NH_3 + 3 Ca(OCl)_2 \rightarrow N_2 + 3 Ca(OH)_2 + 3 Cl_2 \]

**Hint:** Consider the products formed and the stoichiometry of the reaction.

### Conclusion
In summary, when PH₃ reacts with bleaching powder, the main product is phosphorus trichloride (PCl₃). When NH₃ reacts with bleaching powder, the main product is nitrogen gas (N₂).

**Final Answer:**
- PH₃ reacts with bleaching powder to produce PCl₃.
- NH₃ reacts with bleaching powder to produce N₂.