Which one of the following reactions does not come under hydrolysis type reaction?

Options

A. `SiCl_4(l) + 2H_2O(l) rarr SiO_2(s) + 4HCl(aq)`
B. `Li_3N(s) + 3H_2O(l) rarr NH_3(g) + 3LiOH(aq)`
C. `2F_2(g) + 2H_2O(l) rarr 4HF(aq) + O_2(g)`
D. `P_4O_(10)(s) + 6H_2O(l) rarr 4H_3PO_4(aq)`

Answer

To determine which reaction does not come under the hydrolysis type reaction, we need to understand what hydrolysis is. Hydrolysis is a chemical reaction involving the breaking of a bond in a molecule using water. This typically involves the interaction of a substance with water, leading to the formation of new products.

Let's analyze each option step by step:

1. **SiCl4 + H2O → SiO2 + HCl**
- In this reaction, silicon tetrachloride (SiCl4) reacts with water to produce silicon dioxide (SiO2) and hydrochloric acid (HCl). This is a classic example of hydrolysis since water is involved in breaking the bonds of SiCl4.

2. **Li3N + H2O → NH3 + LiOH**
- Here, lithium nitride (Li3N) reacts with water to form ammonia (NH3) and lithium hydroxide (LiOH). This is also an example of hydrolysis, as water is interacting with Li3N to produce new compounds.

3. **H2O → HF + O2**
- In this reaction, water is decomposed into hydrofluoric acid (HF) and oxygen (O2). This reaction does not involve the hydrolysis of a compound; instead, it represents the oxidation of water, where water is being broken down into its elemental components. Therefore, this does not qualify as a hydrolysis reaction.

4. **P4O10 + H2O → H3PO4**
- In this reaction, phosphorus pentoxide (P4O10) reacts with water to form phosphoric acid (H3PO4). This is another example of hydrolysis, as water is involved in the reaction and leads to the formation of a new product.

Based on this analysis, the reaction that does not come under the hydrolysis type is:

**Answer: H2O → HF + O2 (Option 3)**