Testing Acidic Properties Of Carboxylic Acids Flashcards Preview

Chemistry > Testing Acidic Properties Of Carboxylic Acids > Flashcards

Flashcards in Testing Acidic Properties Of Carboxylic Acids Deck (8):
1

What are the three tests?

Acid and base - salt and water
Acid and carbonate - co2, h20 and salt
Acid and metals -salt and hydrogen

2

Give a balanced chemical equation for acid and base test

CH3COOH + NaOH - CH3COONa + H2O
Ethanoic acid + sodium hydroxide - sodium ethanoate and water

3

Give a balanced chemical equation for acid and carbonate

CH3COOH + Na2CO3 - CO2 + H2O + CH3COONa
Ethanoic acid + sodium carbonate - carbon dioxide, water and sodium ethanonate

4

Give a balanced equation for acid and metal [magnesium ribbon]

2CH3COOH + Mg - (CH3COO)2Mg + H2
Ethanoic acid + magnesium - magnesium ethanoate + hydrogen gas

5

Describe test 1 - react carboxylic acid with a base

Base NaOH is added drop by drop until pink appears in ethanoic acid and phenolphthalein

6

Describe test 2 - reacting acid with carbonates

Add Na2CO3 until fizzing occurs as CO2 is given off. Limewater will turn milky if CO2 is passed through it

7

Describe test 3 - acid with metal [magnesium ribbon]

????

8

How could a student have carried out a simple chemical test to confirm that a colourless liquid sample was ethanoic acid and not ethanol?

Add sodium carbonate until fizzing occurs as CO2 is given off. Limewater will turn milky if CO2 is passed through it