What is false about Lane's process?

Options

A. method is used for manufacture of dihydrogen
B. it involves the oxidation of iron by steam
C. it involves the reducing of `H_(2)O_((g))` by iron
D. it involves the oxidation of water gas

Answer

### Step-by-Step Solution:

1. **Understanding Lane's Process**:
Lane's process is a method used for the production of hydrogen gas (H2) from iron and steam. The overall reaction can be summarized as:
\[ 3Fe + 4H_2O \rightarrow Fe_3O_4 + 4H_2 \]
In this reaction, iron (Fe) reacts with steam (H2O) to produce magnetite (Fe3O4) and hydrogen gas.

2. **Identifying the Oxidation and Reduction**:
- In the reaction, iron (Fe) is oxidized. The oxidation state of iron changes from 0 in elemental iron to +2 in Fe3O4.
- The water (H2O) is reduced to hydrogen gas (H2), where the oxidation state of hydrogen changes from +1 in water to 0 in molecular hydrogen.

3. **Evaluating the Statements**:
- **Statement 1**: "It involves the oxidation of iron by steam." This statement is true because iron is oxidized in the presence of steam.
- **Statement 2**: "It involves the reduction of H2O by iron." This statement is false. Water is not reduced by iron; instead, it is reduced to produce hydrogen gas.
- **Statement 3**: "It involves the oxidation of water gas." This statement is also false because water gas (H2O) is not oxidized in this process.

4. **Conclusion**:
The false statements about Lane's process are:
- It involves the reduction of H2O by iron (Statement 2).
- It involves the oxidation of water gas (Statement 3).

Thus, the correct answer to the question "What is false about Lane's process?" is that Statements 2 and 3 are false.