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WorksheetsChemistry Brainiac: Acids and Bases
Total questions: 14
Worksheet time: 10mins
Which substance reacts with hydrochloric acid to produce hydrogen?
calcium oxide
copper
magnesium
sodium hydroxide
A solution has a pH = 14. What substance must be present in the solution?
sodium ions, Na+
hydrogen ions, H+
hydroxide ions, OH-
oxide ions, O2-
What does the term strong acid mean in relation to hydrochloric acid, HCl?
Each molecule can produce two hydrogen ions
It is fully ionised in aqueous solution
Its aqueous solution has a pH much greater than 7
Its salt, silver chloride, is insoluble in water
The word equation shows a chemical reaction.
substance S + sulfuric acid -----> carbon dioxide + a salt + water
What could substance S be?
iron
magnesium oxide
potassium hydroxide
zinc carbonate
Which compound is a base?
barium oxide
copper(II) sulfate
magnesium carbonate
sodium chloride
A volume of aqueous nitric acid is split on the laboratory floor. Name a compound that could be added to the solution to neutralise the nitric acid.
(a)
What is the chemical formula of aqueous ammonia?
Al(OH)3
HNO3
NH3
NH4OH
Complete the equation by filling in the missing substance.
sodium hydroxide + hydrochloric acid ----> sodium chloride + (a)
Complete the equation by filling in the missing chemical formula and balancing the equation.
CuO + (a) ----> Cu(NO3)2 + H2O
Complete the equation by filling in the missing chemical formula and balancing the equation.
2Fe + 6HCl -----> 2FeCl3 + (a)
Complete the equation by filling in the missing chemical formula and balancing the equation.
2Fe + (a) -----> 2FeCl3 + 3H2
A concentrated acid need not necessarily be a strong acid.
True
False
Given equal concentration, a strong acid has a lower pH than a weak acid.
True
False
Mixing acid with an alkali always result in a neutral solution.
True
False
