What happens when a small piece of sodium is dropped into ethanol?’

When a small piece of sodium is dropped into ethanol, several steps occur:

1. Dissolution: The sodium reacts with the ethanol, causing it to dissolve. This is because sodium is highly reactive and readily reacts with the ethanol molecules.

2. Release of hydrogen gas: As the sodium reacts with ethanol, it releases hydrogen gas. This is a result of the displacement reaction between sodium and ethanol, where sodium replaces the hydrogen in ethanol.

2Na(s) + 2C2H5OH(l) → 2C2H5ONa(aq) + H2(g)

3. Formation of sodium ethoxide: The reaction between sodium and ethanol forms sodium ethoxide, which is a salt-like compound. Sodium ethoxide is soluble in ethanol and remains in solution.

4. Heat generation: The reaction between sodium and ethanol is exothermic, meaning it releases heat. This is due to the highly exothermic nature of the reaction between sodium and water, which is a component of ethanol.

Overall, when a small piece of sodium is dropped into ethanol, it dissolves, releases hydrogen gas, forms sodium ethoxide, and generates heat.