(a)[1]
In weak acid, what does the term acid mean?
(b)[1]
In weak acid, what is meant by the word weak?
(c)[1]
Describe how universal indicator may be used to determine the pH of dilute propanoic acid.
(d)[1]
Give a large-scale use of calcium hydroxide that relies on its basic nature.
(e)[2]
Calcium oxide reacts with water to produce calcium hydroxide. This reaction is exothermic. Use ideas about bond breaking and bond forming to explain why the reaction is exothermic.