Question

Identify the reaction type shown and describe the clues that were used to identify it.

Fe2O3 + 2SiO2 → Fe2Si2O7

Answer 1

The reaction shown is a **synthesis reaction**, specifically a form of a **combination reaction**, where two or more reactants combine to form a single product.

### Clues Used to Identify the Reaction Type:

1. **Reactants and Products**: The reaction presents two reactants (Fe2O3 and SiO2) that combine to form a single product (Fe2Si2O7). This is a key characteristic of a synthesis reaction, as it involves combining multiple substances into one.

2. **Chemical Composition**: The reactants are both oxides (iron(III) oxide and silicon dioxide), and they yield a compound (ferrous disilicate) that incorporates elements from both reactants. This indicates that elements are being combined rather than being broken down or replaced, as in other reaction types.

3. **Stoichiometry**: The balanced equation shows that stoichiometric coefficients indicate a specific mole ratio for the reactants to yield the product. This balance is typical of a synthesis reaction, as it reflects the straightforward combination of reactants.

In summary, the formation of one product from two reactants is a primary indicator of a synthesis reaction, making this reaction identifiable as such.