30575980
Descripción
Test por Darryl Gambin, actualizado hace más de 1 año
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Creado por Darryl Gambin
hace más de 3 años
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Pregunta 1
Pregunta
The 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?
Respuesta
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Primary alcohol
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Secondary alcohol
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Tertiary alcohol
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Cyclohexanol cannot be classified as a primary, secondary or tertiary alcohol.
Pregunta 2
Pregunta
Hexan-1-ol is more soluble in ether than in water.
Respuesta
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True
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False
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Not enough information is given to decide
Pregunta 3
Pregunta
The structure of phenol is shown on the side, black spheres represent carbon, grey spheres represent hydrogen and the red sphere represents oxygen
Phenol is
Respuesta
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a stronger acid than ethanol.
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a weaker acid than ethanol.
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an acid of comparable strength to ethanol.
Pregunta 4
Pregunta
The 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
Respuesta
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1 alkene as product
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2 alkenes as products
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3 alkenes as products
Pregunta 5
Pregunta
A 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.
Respuesta
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True, ethanol would undergo the triiodomethane reaction while propan-2-ol will not.
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True, propan-2-ol would undergo the triiodomethane reaction with ethanol will not.
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False, they both with give such a reaction
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False, they both wouldn't give such a reaction
Pregunta 6
Pregunta
A 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?
Respuesta
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Compound is an alcohol.
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Compound is a phenol.
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Compound is a hydroxyacid.
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The compound contains an -OH group.
Pregunta 7
Pregunta
Phosphorus 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
Respuesta
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1 mole of HCl
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2 moles of HCl
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3 moles of HCl
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4 moles of HCl
Pregunta 8
Pregunta
A 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
Respuesta
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2-bromophenol
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4-bromophenol
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a mixture of 2-bromophenol and 4-bromophenol
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2,4,6-tribromophenol
Pregunta 9
Pregunta
The 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
Respuesta
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acidified manganate(VII) and heating under reflux
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acidified manganate(VII), heating and distilling off the ethanal as soon as it forms
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acidified potassium dichromate(VI) and heating under reflux
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acidified potassium dichromate(VI), heating and distilling off the ethanal as soon as it forms
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None the reagents and conditions mentioned here are suitable for the conversion of ethanol to ethanal.
Pregunta 10
Pregunta
The 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.
Respuesta
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concentrated sulfuric(VI) acid and potassium iodide
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concentrated phosphoric(V) acid and potassium iodide
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None of the reagents mentioned here give a good yield of iodoethane.
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This conversion cannot be carried out in 1 step.
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