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WorksheetsAcid, Bases and Salt
Total questions: 15
Worksheet time: 8mins
The pH values of four aqueous solutions are shown.
Which solution contains a weak acid?
pH 2
pH 5
pH 7
pH 9
Which type of reaction takes place when H+ ions and OH- ions react to form water?
condensation
ionisation
neutralisation
precipitation
Aluminium chloride dissolves in water to form a solution with a pH less than 7. Which ion in the solution makes the solution have a pH less than 7?
aluminium
chloride
hydrogen
hydroxide
The approximate pH values of the aqueous solutions of four substances commonly used in cooking are shown.
Which substance could be taken to neutralise excess acid in the stomach?
Baking soda, pH 9
Salt, pH 7
Lemon juice, pH 4
Vinegar, pH 3
Which statement about all acids is correct?
They contain both hydrogen and oxygen.
They give ammonia with an ammonium salt.
They have a pH value below 7.
They react with all metals to form hydrogen.
Ammonia may be obtained from ammonium chloride by heating with.......
Aqueous calcium chloride.
Aqueous sodium hydroxide.
Dilute hydrochloric acid.
Water.
The table shows the pH value of 5 soil samples. Cabbages grow best in alkaline soil.
In which of the soil samples should cabbage grow well?
P and Q
Q and T
R and P
S and T
Sodium hydroxide is an alkali.
Which statement about aqueous strontium hydroxide is correct?
The solution contains fewer hydrogen ions than hydroxide ions.
The solution has a pH less than 7.
The solution reacts with metal carbonates to form carbon dioxide.
The solution turns blue litmus red
The oxide of a metal reacts both with hydrochloric acid and with aqueous sodium
hydroxide. The type of oxide is.....
acidic.
amphoteric.
basic.
neutral.
Which compound is an amphoteric oxide?
Calcium oxide
Copper (II) oxide
Sulphur dioxide
Zinc oxide
Waste water from a factory was found to have a pH value of 2.
Which substance could be used to neutralise the waste water before it is released into a river?
Ammonium sulfate
Lime
Oxygen
Sulfur dioxide
Which are the most appropriate reagents for preparing potassium chloride in the
laboratory?
Potassium and chlorine
Potassium and hydrochloric acid
Potassium hydroxide and hydrochloric acid
Potassium nitrate and barium chloride
Which compound can form an aqueous solution with pH 14?
Carbon dioxide
Hydrogen chloride
Sodium chloride
Sodium hydroxide
Which element forms an oxide that reacts with water to give an acidic solution?
Aluminium
Sodium
Sulfur
Zinc
Aqueous potassium sulphate can be prepared by titrating dilute sulphuric acid against aqueous potassium carbonate. Which conclusion can be drawn from this information?
Potassium carbonate is insoluble in water.
Potassium carbonate neutralises sulphuric acid.
Potassium sulphate is a base.
Potassium sulphate is insoluble in water.
