Write chemical equation involved in Cannizzaro's reaction.

Explanation

To write the chemical equation involved in Cannizzaro's reaction, we need to understand the process that occurs when formaldehyde reacts in the presence of a strong base, such as sodium hydroxide (NaOH).

### Step-by-Step Solution:

1. **Identify the Reactants**: The primary reactant in Cannizzaro's reaction is formaldehyde (HCHO). The strong base used is sodium hydroxide (NaOH).

2. **Understand the Reaction**: In Cannizzaro's reaction, formaldehyde does not undergo oxidation or reduction in the traditional sense, but instead, it disproportionates. This means that one molecule of formaldehyde is reduced to form methyl alcohol (methanol, CH3OH), while another molecule is oxidized to form sodium formate (HCOONa).

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