IGCSE Excel Chemistry (Paper 2) Questions
with Answers
Name the type of reaction:
C2H4 + H2O ---> C2H5OH - Correct Answer Addition
Products of complete combustion - Correct Answer Carbon dioxide and Water
Products of incomplete combustion - Correct Answer - Carbon monoxide / Carbon
Water
Condition for incomplete combustion - Correct Answer Limited supply of oxygen
Alcohol functional group - Correct Answer -OH
Displayed formula for ethanol - Correct Answer Displayed formula for propanol - Correct Answer Displayed formula for butane - Correct Answer Microbial oxidation - Correct Answer Reaction of ethanol with oxygen in the air to form ethnic acid
Heating ethanol with potassium dichromate (VI) in dilute sulphuric acid forms... - Correct Answer Ethnic acid
Conditions for fermentation of glucose - Correct Answer 30ºC
anaerobic conditions (absence of air)
yeast (biological catalyst)
What does fermentation of glucose produce? - Correct Answer Ethanol
Hydration of ethane produces...
Ethane + Steam ---> - Correct Answer Ethanol
Conditions for the hydration of ethane
Ethane + Steam ---> Ethanol - Correct Answer 300ºC 60-70 at pressure
Phosphoric acid catalyst
Complete the equation C2H4 (g) + ... ----> C2H5OH (l) - Correct Answer H2O (g)
An advantage of fermentation - Correct Answer Renewable starting material (Glucose)
A disadvantage of fermentation - Correct Answer - Slow rate of reaction
Low purity
An advantage of hydration of ethane - Correct Answer - High purity
Fast rate of reaction
A disadvantage of hydration of ethane - Correct Answer Expensive
What does fermentation of glucose produce? - Correct Answer Ethanol
Heating ethanol with potassium dichromate (VI) in dilute sulphuric acid forms... - Correct Answer Ethnic acid
Conditions needed for
C2H5OH + 2[O] ---> CH3COOH + H20 - Correct Answer - Potassium dichromate (VI)
Sulphuric acid
Heat
Name the type of reaction
C2H5OH + 2[O] ---> CH3COOH + H20 - Correct Answer Oxidation
Carboxylic acid functional group - Correct Answer COOH
Mechanic acid displayed formula - Correct Answer Ethnic acid displayed formula - Correct Answer Propionic acid displayed formula - Correct Answer Botanic acid displayed formula - Correct Answer Gas produced when carboxylic acid reacts with metals - Correct Answer Hydrogen
with Answers
Name the type of reaction:
C2H4 + H2O ---> C2H5OH - Correct Answer Addition
Products of complete combustion - Correct Answer Carbon dioxide and Water
Products of incomplete combustion - Correct Answer - Carbon monoxide / Carbon
Water
Condition for incomplete combustion - Correct Answer Limited supply of oxygen
Alcohol functional group - Correct Answer -OH
Displayed formula for ethanol - Correct Answer Displayed formula for propanol - Correct Answer Displayed formula for butane - Correct Answer Microbial oxidation - Correct Answer Reaction of ethanol with oxygen in the air to form ethnic acid
Heating ethanol with potassium dichromate (VI) in dilute sulphuric acid forms... - Correct Answer Ethnic acid
Conditions for fermentation of glucose - Correct Answer 30ºC
anaerobic conditions (absence of air)
yeast (biological catalyst)
What does fermentation of glucose produce? - Correct Answer Ethanol
Hydration of ethane produces...
Ethane + Steam ---> - Correct Answer Ethanol
Conditions for the hydration of ethane
Ethane + Steam ---> Ethanol - Correct Answer 300ºC 60-70 at pressure
Phosphoric acid catalyst
Complete the equation C2H4 (g) + ... ----> C2H5OH (l) - Correct Answer H2O (g)
An advantage of fermentation - Correct Answer Renewable starting material (Glucose)
A disadvantage of fermentation - Correct Answer - Slow rate of reaction
Low purity
An advantage of hydration of ethane - Correct Answer - High purity
Fast rate of reaction
A disadvantage of hydration of ethane - Correct Answer Expensive
What does fermentation of glucose produce? - Correct Answer Ethanol
Heating ethanol with potassium dichromate (VI) in dilute sulphuric acid forms... - Correct Answer Ethnic acid
Conditions needed for
C2H5OH + 2[O] ---> CH3COOH + H20 - Correct Answer - Potassium dichromate (VI)
Sulphuric acid
Heat
Name the type of reaction
C2H5OH + 2[O] ---> CH3COOH + H20 - Correct Answer Oxidation
Carboxylic acid functional group - Correct Answer COOH
Mechanic acid displayed formula - Correct Answer Ethnic acid displayed formula - Correct Answer Propionic acid displayed formula - Correct Answer Botanic acid displayed formula - Correct Answer Gas produced when carboxylic acid reacts with metals - Correct Answer Hydrogen
