28599740
Descripción
Test por jodie davies, actualizado hace más de 1 año
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Creado por jodie davies
hace casi 4 años
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Pregunta 1
Pregunta
Which of these best describes an alcohol?
Respuesta
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A homologous series where one hydrogen atom is replaced by an OH group.
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A heterologous series where one hydrogen atom is replaced by an OH group.
Pregunta 2
Pregunta
What is the definition of 'homologous series'?
Respuesta
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A group of chemicals with similar properties that can be represented by a general formula.
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A group of chemicals that have the exact same properties and formula.
Pregunta 3
Pregunta
Which of these are characteristics of a homologous series?
Respuesta
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The members of the homologous series have the same functional group
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The members of the homologous series always contain ethene.
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The members of the homologous series share a specific formula.
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The members of the homologous series share a general formula.
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The members of the homologous series have a common general method of preparation.
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The members of the homologous group all have low melting points.
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The members of the homologous group have similar chemical properties.
Pregunta 4
Pregunta
There are [blank_start]two[blank_end] main processes involved in the [blank_start]industrial[blank_end] preparation of ethanol. [blank_start]Hydration[blank_end] of ethene involves [blank_start]cracking[blank_end] hydrocarbons produced from [blank_start]petroleum.[blank_end] Ethene then reacts with [blank_start]steam[blank_end] to produce ethanol. Another method is called [blank_start]Fermentation[blank_end] which involves [blank_start]sugars[blank_end] being converted into ethanol.
Respuesta
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two
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industrial
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Hydration
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cracking
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petroleum.
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steam
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Fermentation
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sugars
Pregunta 5
Pregunta
The reaction between an alcohol and a [blank_start]carboxylic acid[blank_end] gives an [blank_start]ester[blank_end]
Respuesta
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carboxylic acid
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ester
Pregunta 6
Pregunta
The ideal conditions for hydration of ethene is a temperature of [blank_start]300[blank_end] and pressure of [blank_start]60-70[blank_end] atmospheres.
Respuesta
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300
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200
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420
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137
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60-70
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70-80
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30-40
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90-100
Pregunta 7
Pregunta
With regards to temperature to complete hydration of ethene, which statement is true?
Respuesta
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A higher yield of ethanol would be produced at lower temperatures
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A higher yield of ethanol would be produced at higher temperatures
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The temperature has no effect on the yield of ethanol produced
Pregunta 8
Pregunta
[blank_start]High[blank_end] pressure leads to a high yield of ethanol.
Respuesta
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High
Pregunta 9
Pregunta
Which of these is missing from the end of this formula representing hydration of ethene? CH2 = CH2(g) + H2O(g) <>
Respuesta
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CH2CH2OH(g)
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CH3CH2OH(g)
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CH4CHOH(g)
Pregunta 10
Pregunta
Which of these better depicts the definition of a functional group?
Respuesta
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specific groupings of atoms within molecules that have their own characteristic properties, regardless of the other atoms present in a molecule.
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specific groupings of atoms within molecules that have their own characteristic properties, based of the number of carbons present
Pregunta 11
Respuesta
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Chlorine
Pregunta 12
Pregunta
Label this diagram of fractional distillation. The method of which alcoholic drinks are produced (fermentation)
Respuesta
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Thermometer
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out
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in
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bunsen burner
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round-bottom
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fractionating
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Glass beads
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Condenser
Pregunta 13
Pregunta
The boiling temperature of ethanol is [blank_start]80[blank_end] degrees and therefore to separate it from an aqueous mixture, [blank_start]fractional distillation[blank_end] is needed.
Respuesta
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80
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fractional distillation
Pregunta 14
Pregunta
Ideal conditions for fermentation include...
Respuesta
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sugar, warm place and a yeast catalyst
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cold place and a yeast catalyst
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glucose, warm place and a yeast catalyst
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