Reactions forming salts
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11 Terms
What are the three types of substances that carboxylic acids react with to form salts?
Metals, alkalis and carbonates.
What are the products when a carboxylic acid reacts with a metal?
Salt + hydrogen.
Write the equation for ethanoic acid reacting with sodium.
2CH₃CO₂H + 2Na → 2CH₃CO₂⁻Na⁺ + H₂
What are the products when a carboxylic acid reacts with an alkali?
Salt + water.
Write the equation for ethanoic acid reacting with NaOH.
CH₃CO₂H + NaOH → CH₃CO₂⁻Na⁺ + H₂O
What are the products when a carboxylic acid reacts with a carbonate?
Salt + water + carbon dioxide.
Write the equation for ethanoic acid reacting with sodium carbonate.
2CH₃CO₂H + Na₂CO₃ → 2CH₃CO₂⁻Na⁺ + H₂O + CO₂
What observation occurs when a carboxylic acid reacts with a carbonate?
Effervescence due to production of CO₂.
How can Na₂CO₃ or NaHCO₃ be used as a functional group test for carboxylic acids?
Add solid Na₂CO₃ or aqueous NaHCO₃. Effervescence occurs because CO₂ is produced.
What is the key observation to state in a carboxylic acid carbonate test?
Effervescence/fizzing due to CO₂ production.