MediumChemistryHigh School (9–10)GeneralCarbon and Its Compounds › Reactions and Uses of Carbon CompoundsNumericalBoard Exam
Ethanol reacts with sodium: 2 Na + 2 C₂H₅OH → 2 C₂H₅ONa + H₂…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Ethanol reacts with sodium: . What masses of ethanol and of sodium are needed to make of hydrogen gas? (, ethanol , .)
Need a reminder? The key ideaShow
Ethanol, , gives hydrogen with sodium, and ethene with hot concentrated sulphuric acid. Ethanoic acid, , is a weak acid: it turns blue litmus red and fizzes with carbonates. Acid + alcohol, with a few drops of concentrated sulphuric acid, gives an ester and water.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Hydrogen. .
Step 2. Moles needed. The equation needs twice as many moles of each reactant: of ethanol and of sodium.
Step 3. Masses. Ethanol: . Sodium: .
Answer: of ethanol and of sodium.
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