Question : When formaldehyde and potassium hydroxide are heated, we get
Option 1: Acetylene
Option 2: Methyl alcohol
Option 3: Methane
Option 4: Ethyl formate
Correct Answer: Methyl alcohol
Solution : The correct option is Methyl alcohol
When formaldehyde (CH2O) and potassium hydroxide (KOH) are heated together, they can undergo a reaction known as the Cannizzaro reaction. In the Cannizzaro reaction, formaldehyde is both oxidized to formic acid (HCOOH) and reduced to produce methanol (CH3OH). Here's the balanced chemical equation for this reaction:
2 CH2O + KOH → HCOOH + CH3OH
So, when formaldehyde and potassium hydroxide are heated, you get both formic acid and methanol as products.
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