Worksheet: Carboxylic Acids

In this worksheet, we will practice to writing and interpreting the names and formulas of carboxylic acids and describing their physical and chemical properties.

Q1:

Which products are formed when a carboxylic acid reacts with a metal?

  • AEsterwater+
  • BSaltcarbondioxide+
  • CSaltcarbondioxidewater++
  • DSaltwater+
  • ESalthydrogen+

Q2:

Which of the following is not a use for carboxylic acids?

  • AManufacturing dyes
  • BManufacturing pharmaceuticals
  • CProducing foodstuff
  • DManufacturing soaps
  • EBurning as fuel

Q3:

Which of the following agents could be used to test for a carboxylic acid?

  • AA glowing splint
  • BRed litmus paper
  • CpH paper
  • DBarium chloride
  • ELimewater

Q4:

Which products are formed when a carboxylic acid reacts with a carbonate?

  • AEster + water
  • BSalt + carbon dioxide
  • CSalt + water
  • DSalt + hydrogen
  • ESalt + carbon dioxide + water

Q5:

Which type of organic compound reacts with carboxylic acids to form an ester?

  • AAlkene
  • BAlcohol
  • CAldehyde
  • DAlkane
  • EKetone

Q6:

What products are formed when a carboxylic acid reacts with an alkali?

  • AEster + water
  • BSalt + carbon dioxide
  • CSalt + carbon dioxide + water
  • DSalt + water
  • ESalt + hydrogen

Q7:

Which of the following organic compounds can be oxidized to produce a carboxylic acid?

  • A
    CHHCHHCHOOH
  • B
    CHHCCHHHH
  • C
    CH3CH2CH3
  • D
    CH3CH2COOH
  • E
    CH3CH2CH2OH

Q8:

Which of the following is the molecular formula for propanoic acid?

  • ACHCOOH25
  • B
    CCHHHHCHHO
  • C
    CH3CH2COOH
  • DCHCHCOOH32
  • ECHO362

Q9:

Which reactant and two products with the correct stoichiometry are missing from the following equation? 2HCOOH+Ca(HCOO)++2

  • ACaCO3, 2CO2, H2
  • BCaCO3, 2CO2, HO2
  • CCaCO3, CO2, 2HO2
  • DCaCO3, 2CO2, 2HO2
  • ECaCO3, CO2, HO2

Q10:

What is the molecular formula of the main product formed when butan-1-ol reacts with potassium dichromate (VI) in dilute sulfuric acid?

  • ACHO4102
  • BCHO410
  • CCHO462
  • DCHO48
  • ECHO482

Q11:

One organic compound X is produced by the double oxidation of ethanol, according to the equation: CHCHOH+2[O]X+HO322.

What is the molecular formula of compound X?

  • ACHCH33
  • BCHOH3
  • CCHCH22
  • DCHCHO3
  • ECHCOOH3

What is the name of compound X?

  • AEthene
  • BEthanol
  • CEthanoic acid
  • DEthane
  • EEthanal

Q12:

What is the displayed structure of the major organic product when propan-1-ol reacts with excess acidified potassium dichromate solution?

  • A
    CHCHHCHHHHH
  • B
    CCHHHCHHHO
  • C
    CHHCHCOHHH
  • D
    CCHHHCHHOOH

Q13:

Ethanoic acid can undergo a reversible reaction with ethanol to form ethyl acetate and water. CHCOOH+CHCHOHCHCOOCHCH+HO3323232ConcHSO24 Which of the following reaction types represents this reaction?

  • ACombustion reaction
  • BNeutralization reaction
  • COxidation-reduction reaction
  • DRearrangement reaction
  • EEsterification reaction

Q14:

Carboxylic acids are measured to be weak acids. Which of the following statements is the correct explanation for this?

  • ACarboxylic acids are fully dissociated in acidic aqueous solutions.
  • BCarboxylic acids are fully dissociated in basic aqueous solutions.
  • CCarboxylic acids are partially dissociated in neutral aqueous solutions.
  • DCarboxylic acids are fully dissociated in neutral aqueous solutions.
  • ECarboxylic acids are not dissociated in neutral aqueous solutions.

Q15:

An experiment was carried out by dropping a piece of sodium metal into a beaker containing ethanoic acid.

What is the gas evolved from this reaction?

  • ACarbon dioxide
  • BMethane gas
  • CHydrogen
  • DCarbon monoxide

What is the name of the sodium compound formed in the reaction?

  • ASodium ethanoate
  • BSodium hydroxide
  • CSodium carbonate
  • DSodium ethanoic

Which of the following represents the balanced equation for this reaction?

  • A2CHCOOH+2NaH+2CHCOONa323
  • B3CHCOOH+2Na2CH+2CHCOONa343
  • C3CHCOOH+2Na2CO+2CHCOONa33
  • D3CHCOOH+2Na2CO+2CHCOONa323

Q16:

Which of the following products are formed if you heat a carboxylic acid with an alcohol in the presence of a strong acid as a catalyst?

  • AEster and hydrogen
  • BSalt, water, and carbon dioxide
  • CEster and water
  • DEster and carbon dioxide
  • ESalt and hydrogen

Q17:

What is the suffix for a carboxylic acid?

  • A-ate acid
  • B-ene acid
  • C-oic acid
  • D-ane acid
  • E-ol acid

Q18:

Complete the reaction. +2CHCOONa()+HO()+CO()322aqlaq

  • A2CHCOOH(),NaSO()324aqs
  • B2CHCOOH(),NaCO()323aqs
  • C2CHCOOH(),2NaOH()3aqaq
  • D2CHCHCOOH(),2NaOH()32aqaq
  • ECHCOOH(),NaCO()33ll

Q19:

Which carboxylic acid is commonly known as acetic acid?

  • APropanoic acid
  • BEthanoic acid
  • CButanoic acid
  • DMethanoic acid

Q20:

The functional group of a molecule is the group of atoms that is responsible for its characteristic reactions. Which of the following is the functional group for carboxylic acids?

  • ACOOH
  • BCOH
  • CCO
  • DCOO
  • ECOH

Q21:

Carboxylic acids are found widely in nature. For example, ethanoic acid is the main acid in vinegar. What is the condensed formula for ethanoic acid?

  • ACHCOOH3
  • BHCOOH
  • CCHCHCOOH32
  • DCHCHCOH32
  • ECHOH3

Q22:

Which of the following substances are easily oxidized to make carboxylic acids?

  • AAlkanes
  • BAlcohols
  • CAlkenes
  • DEsters
  • EAlkynes

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