Quiz
Alcohols and phenols
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Perguntas do quiz (10)
1The structure of cylohexanol is shown on the side, black spheres represent carbon, grey spheres represent hydrogen and the red sphere represents oxygen.
How would you classify cyclohexanol?
- APrimary alcohol
- BSecondary alcohol
- CTertiary alcohol
- DCyclohexanol cannot be classified as a primary, secondary or tertiary alcohol.
2Hexan-1-ol is more soluble in ether than in water.
- ATrue
- BFalse
- CNot enough information is given to decide
3The structure of phenol is shown on the side, black spheres represent carbon, grey spheres represent hydrogen and the red sphere represents oxygen
Phenol is
- Aa stronger acid than ethanol.
- Ba weaker acid than ethanol.
- Can acid of comparable strength to ethanol.
4The structure of butan-2-ol is shown on the side, black spheres represent carbon, grey spheres represent hydrogen and the red sphere represents oxygen.
The reaction of butan-2-ol with hot concentrated phosphoric(V) acid forms
- A1 alkene as product
- B2 alkenes as products
- C3 alkenes as products
5A positive triiodomethane test (i.e. iodoform test) would produce a pale yellow precipitate (shown left) with an antisceptic smell.
The triiodomethane reaction can be used to distinguish between ethanol and propan-2-ol.
- ATrue, ethanol would undergo the triiodomethane reaction while propan-2-ol will not.
- BTrue, propan-2-ol would undergo the triiodomethane reaction with ethanol will not.
- CFalse, they both with give such a reaction
- DFalse, they both wouldn't give such a reaction
6A chemist reacts a compound with neutral iron(III) chloride and obtains a violet solution (shown on the left). What can the chemist conclude about the compound?
- ACompound is an alcohol.
- BCompound is a phenol.
- CCompound is a hydroxyacid.
- DThe compound contains an -OH group.
7Phosphorus pentachloride is a solid reagent (shown left) which can be used in the lab to test for the presence of an -OH group.
Ethene can be oxidised to an alcohol which reacts with phosphorus pentachloride to form
- A1 mole of HCl
- B2 moles of HCl
- C3 moles of HCl
- D4 moles of HCl
8A chemist reacts phenol with bromine water. The orange brown colour of the bromine water is delcolourised and a white precipitate is formed. The white precipitate formed is
- A2-bromophenol
- B4-bromophenol
- Ca mixture of 2-bromophenol and 4-bromophenol
- D2,4,6-tribromophenol
9The structure of ethanal is shown on the left, black spheres represent carbon, grey spheres represent hydrogen and the red sphere represents oxygen.
Ethanol can be oxidised to ethanal by using appropriate reagents and conditions. This conversion can be carried out using
- Aacidified manganate(VII) and heating under reflux
- Bacidified manganate(VII), heating and distilling off the ethanal as soon as it forms
- Cacidified potassium dichromate(VI) and heating under reflux
- Dacidified potassium dichromate(VI), heating and distilling off the ethanal as soon as it forms
- ENone the reagents and conditions mentioned here are suitable for the conversion of ethanol to ethanal.
10The structure of iodoethane is shown on the left, black spheres represent carbon, grey spheres represent hydrogen and the purple sphere represents iodine.
A chemist wants to convert ethanol to iodoethane in 1 step. Which of the following reagents and conditions can be used.
- Aconcentrated sulfuric(VI) acid and potassium iodide
- Bconcentrated phosphoric(V) acid and potassium iodide
- CNone of the reagents mentioned here give a good yield of iodoethane.
- DThis conversion cannot be carried out in 1 step.
Informações
- Descrição
- This is a multiple choice quiz regarding alcohols and phenols. This may be used for may be used to generate a class discussion or to review the topic of alcohols and phenols.
- Autor
- Darryl Gambin
- Idioma
- English
- Visualizações
- 105
- Etiquetas
- Avaliação
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