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WorksheetsAcid, Bases and Oxides
Total questions: 10
Worksheet time: 6mins
What is the definition of acids according to the Arrhenius Theory?
An acid is a substance that dissociates in water to form hydrogen ions (H+) and anions.
An acid is a substance that dissociates in water to form hydroxide ions (OH-) and cations.
An acid is a substance that is a proton acceptor.
An acid is a substance that is an electron-pair acceptor
Which of the following is not an acidic property
Turns moist litmus paper blue
pH value less than 7
Corrosive in nature
Sour tasting
Why is it important to use moist litmus paper?
Water is wet
Water is colourless and has a pH of 7
Water serves as the medium for the substance to dissociate
Water has a very high concentration.
Define ‘strength of an acid’
Which of the following are strong acids
Ethanoic acid
Carbonic acid
Phosphoric acid
Sulfuric acid
State the chemical formula of ethanoic acid (e.g. Carbon Dioxide -> CO2)
(a)
How many moles of hydrogen ions does 1 mole of sulfuric acid produce upon dissociation in water?
1
2
3
4
What are the products formed in an Acid-Carbonate reaction?
Salt + Hydrogen Gas
Salt + Water
Salt + Hydrogen Gas + Carbon Dioxide
Salt + Carbon Dioxide + Water
Which of the following chemicals can be used to neutralize acidic soil?
Calcium
Quicklime (Calcium Oxide)
Pulverized Limestone (Calcium Carbonate)
Slaked Lime (Calcium Hydroxide)
State the basicity of phosphoric acid (H3PO4)
(a)
