EduNinjaEdexcel IGCSE Chemistry (f) Carboxylic acids question practice helps you revise this syllabus point with the course map in view. Use this page to focus on one topic, check the style of questions available, and connect each attempt back to the knowledge area it is testing.
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This question is about alcohols, carboxylic acids and their reactions.
The boxes give some information about a carboxylic acid.
Complete the boxes by giving the missing information.
| Information | Value |
|---|---|
| structural formula | CH3COOH |
| name | ................................ |
| empirical formula | CH2O |
| displayed formula | ................................ |
This question is about carboxylic acids and esters.
Ethanoic acid reacts with magnesium to form two products.
Complete the equation for this reaction.
................................ + Mg -> (CH3COO)2Mg + ................................
Give two observations that could be made during this reaction.
1
2
This question is about the reactions of ethanol and ethanoic acid.
Ethanoic acid reacts with solid sodium carbonate.
Complete the chemical equation for this reaction.
+ +
State two observations seen in this reaction.
1
2
This question is about the reactions of carboxylic acids.
Carboxylic acids react with solutions of metal carbonates.
Complete the chemical equation for the reaction of ethanoic acid, CH3COOH, with potassium carbonate solution.
2CH3COOH + K2CO3 -> ................................ + .............................. + ..............................
State what you would see in this reaction.
Some cars in Brazil use ethanol, , as a fuel instead of petrol.
The ethanol is made by the fermentation of glucose which is obtained from sugar cane.
The sugar is extracted from the sugar cane and then dissolved in water to make a sugar solution.
When ethanol is heated with acidified potassium dichromate(VI), it is oxidised to ethanoic acid.
The structural formula of ethanoic acid is
Draw the displayed formula of ethanoic acid.
Complete the equation for the reaction of ethanoic acid with sodium.
............ CH3COOH(aq) + ............ Na(s) -> ................................ (aq) + ................................ (g)
This question is about alcohols, carboxylic acids and esters.
（c）Aspirin is a compound used to reduce pain．
Aspirin contains a carboxylic acid functional group and an ester functional group．
This is the structural formula of aspirin.
Draw a circle around the carboxylic acid functional group.
Methanoic acid (HCOOH) reacts with sodium carbonate solution to give three products.
Complete the equation for this reaction.
2HCOOH + Na2CO3 -> ................................ + ................................ + ................................
State what you would observe in this reaction.
This question is about organic compounds.
The diagram shows the displayed formula of methanoic acid.
Give the total number of atoms in one molecule of methanoic acid.
When ethanoic acid reacts with ethanol in the presence of concentrated sulfuric acid, one of the products is ester A.
This is the equation for the reaction.
Draw a circle around the functional group in ethanoic acid.
This question is about alcohols and carboxylic acids.
These are the structural formulae of alcohol A and carboxylic acid B .
Alcohol A
Carboxylic acid B
Carboxylic acid B has a chain of carbon atoms with no branches.
The number of units is represented by the letter n.
Calculate the value of n.
[for carboxylic acid B, ]