Chemistry 9701/22 — May/June 2013
Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Hydroxy Compounds · Atoms, Molecules and Stoichiometry · Carbonyl Compounds · Introduction to Organic Chemistry · Equilibria · Halogen Compounds · +7 more
Ammonium sulfate is a fertiliser which is manufactured by the reaction between ammonia and sulfuric acid.
Ammonia is described as a weak base and sulfuric acid as a strong acid.
By using an equation, explain clearly what is meant by the term weak base.
Ammonia and sulfuric acid are both manufactured by processes which involve chemical equilibria.
Sulfuric acid is produced from sulfur trioxide which is made by the Contact process.
State three important operating conditions for the Contact process for the manufacture of sulfur trioxide.
For each of your conditions, you should avoid the use of vague phrases such as 'high temperature'.
condition 1 .................................................................................................................
condition 2 .................................................................................................................
condition 3 .................................................................................................................
How is the sulfur trioxide produced converted into sulfuric acid?
Chloropropanols such as 1,3-dichloropropan-2-ol (1,3-DCP) are present in some foods.
1,3-DCP
What will be produced when 1,3-DCP is reacted separately with the following reagents under suitable conditions?
In each case give the structural formula.
concentrated sulfuric acid
an excess of ammonia
Describe as fully as you can what type of reaction occurs with ammonia.
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