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123 questions
Chemistry/Paper 2/Hydroxy Compounds
CAIEAS Level9701-as · Paper 2

Hydroxy Compounds

123 questions· page 1 of 13

Q42013 May/Jun·P2111MMedium-Easy

Organic chemistry is the chemistry of carbon compounds. The types of organic reactions that you have studied are listed below.

  • addition
  • elimination
  • hydrolysis
  • oxidation
  • reduction
  • substitution

Addition and substitution reactions are further described as follows.

  • electrophilic
  • nucleophilic
  • free radical

Complete the table below.
Fill in the central column by using only the types of reaction given in the lists above.
Use both lists when appropriate.
In the right hand column give the formula(e) of the reagent(s) you would use to carry out the reaction given.

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Q42013 Oct/Nov·P232 partsEasy
(a)(iv)

Which functional group(s) in (ii) will react with sodium metal?

(d)

Use your answers to (b) and (c) to deduce which structure, R, S or T, corresponds to the structure of Q and write balanced equations for the reactions that occurred.

identity of Q is .........

equation for reaction with sodium carbonate:

equation for reaction with sodium metal:

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Q42012 May/Jun·P223 partsMedium-Easy
(a)

On treating compounds containing each of these functional groups with the reagents below, only five reactions occur. Complete the table by placing a tick (\checkmark) in each box where you believe a reaction will occur. You should place no more than five ticks in the table.

reagentalcohol R2_2CHOHaldehyde RCHOcarboxylic acid RCO2_2Hester RCO2_2R'ketone RCOR'
NaHCO3_3
Na
Cr2_2O72_7^{2-} / H+^+
(b)(i)

What functional group do these two reactions show to be present in G?

(d)(i)

When G is heated under reflux with acidified K2_2Cr2_2O7_7, compound H is formed.

Give the structural formula of compound H.

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Q52012 May/Jun·P235 partsEasy
(b)(i)

What type of reaction occurs when H is formed from F?

(b)(ii)

Use your answers to (a)(ii) and (b)(i) to deduce the structural formula of the colourless liquid H.

(c)

Compound F will react with sodium.

Calculate the volume of H₂, measured at room temperature and pressure, which will be produced when 0.600 g of F is reacted with an excess of Na.

(d)(i)

Suggest two structural formulae for these isomers.

(d)(ii)

Isomers J and K can both be oxidised.

What will be produced when each of the isomers J and K is heated under reflux with acidified K₂Cr₂O₇?

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Q42011 Oct/Nov·P222 partsMedium
(a)

Some reactions of but-1-ene are given below.

In each empty box, draw the structural formula of the organic compound formed.

(b)

Compound T reacts with compound U.

Draw the displayed formula of the organic product of this reaction.

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Q52013 Oct/Nov·P232 partsMedium-Easy
(b)

Acidified potassium dichromate(VI) is used as an oxidising agent in organic chemistry.

Give the structural formula of the organic product formed when each of the four alcohols above is heated under reflux with acidified potassium dichromate(VI).
If you believe that no reaction occurs, write 'no reaction' in the box.

(c)

One of the alcohols, W, X, Y or Z, can be dehydrated to give more than one organic product.

Identify this alcohol and give the structural formulae of two of the products.

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Q52016 Oct/Nov·P213 partsMedium-Easy
(b)

State the reagents and conditions needed for reaction 1.

(c)

State the reagents and conditions needed for reaction 2.

(d)

Name P\text{P}, the organic product of reaction 3.

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Q52016 Oct/Nov·P233 partsMedium-Easy
(b)

State the reagents and conditions needed for reaction 1.

(c)

State the reagents and conditions needed for reaction 2.

(d)

Name P, the organic product of reaction 3.

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Q4(a)2011 Oct/Nov·P215MMedium
(a)

Some reactions of but-1-ene are given below.

In each empty box, draw the structural formula of the organic compound formed.

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Q52021 May/Jun·P233 partsMedium-Easy
(a)

Complete the equation to show the reaction of excess sodium with citric acid. Show the skeletal structure of the product.

(b)(i)

Use the information in the table to deduce the skeletal formula of X, C3H6O3\text{C}_3\text{H}_6\text{O}_3. Draw the skeletal formula of X in the box. Label the chiral centre of compound X with an asterisk (*).

(b)(ii)

Explain why compound X reacts with acidified Cr2O72\text{Cr}_2\text{O}_7^{2-} but citric acid does not.

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