869587
Pregunta 1
Pregunta
Which ion do all acids release in solution?
Respuesta
-
H+
-
OH-
Pregunta 2
Pregunta
Which ion do all alkalis release in solution?
Respuesta
-
H+
-
OH-
Pregunta 3
Pregunta
What does the state symbol (aq) mean?
Respuesta
-
Chemical is only found in aquaria
-
Found in aqueous solution
-
Chemical is water
Pregunta 4
Pregunta
True or false? Reacting a metal in acid produces hydrogen gas.
Respuesta
- True
- False
Pregunta 5
Pregunta
Which salt would be produced with reacting cadmium hydroxide and nitric acid?
Respuesta
-
Cadmium chloride
-
Cadmium sulphate
-
Cadmium nitrate
Pregunta 6
Pregunta
Which of these are neutralisation reactions?
Respuesta
-
H2SO4 + 2NaOH --> Na2SO4 + 2H2O
-
H2SO4 + 2Na --> Na2SO4 + H2
-
H2SO4 + 2KOH --> K2SO4 + 2H2O
-
H2SO4 + 2K --> K2SO4 + H2
Pregunta 7
Pregunta
Which of these is a non-metallic cation?
Respuesta
-
Fe3+
-
NH4+
-
Mg2+
Pregunta 8
Pregunta
True or false? Lead iodide is soluble so it forms a precipitate.
Respuesta
- True
- False
Pregunta 9
Pregunta
True or false? The substance that is broken down by electrolysis is the electrolyte.
Respuesta
- True
- False
Pregunta 10
Pregunta
True or false? Anions are attracted to the negatively charged electrode.
Respuesta
- True
- False
Pregunta 11
Pregunta
Which of these ions is reduced and at which electrode?
Respuesta
-
Pb2+ at the anode
-
Pb2+ at the cathode
-
Br- at the anode
-
Br- at the cathode
Pregunta 12
Pregunta
Which of these ions is oxidised and at which electrode?
Respuesta
-
Pb2+ at the anode
-
Pb2+ at the cathode
-
Br- at the anode
-
Br- at the cathode
Pregunta 13
Pregunta
Which of these is a correct, balanced, set of half-equations?
Respuesta
-
Pb2+ + 2e- --> Pb, Br- --> Br + e-
-
Pb2+ + e- --> Pb+, Br- --> Br+ + 2e-
-
Pb2+ + 2e- --> Pb, 2Br- --> Br2 + 2e-
Pregunta 14
Pregunta
What is the name of the ore of aluminium?
Respuesta
-
Bauxite
-
Haematite
-
Cryolite
-
Malachite
Pregunta 15
Pregunta
What is the name of the chemical that reduces the operating temperature of an aluminium electrolysis cell?
Respuesta
-
Bauxite
-
Haematite
-
Cryolite
-
Malachite
Pregunta 16
Pregunta
Which of these are uses of chlorine from the electrolysis of brine?
Respuesta
-
Making margarine
-
Making bleach
-
Making paper
-
Disinfecting swimming pools
-
Making soap
-
Making polyvinylchloride
Pregunta 17
Pregunta
Which of these are uses of hydrogen from the electrolysis of brine?
Respuesta
-
Making margarine
-
Making bleach
-
Making paper
-
Disinfecting swimming pools
-
Making soap
-
Making polyvinylchloride
Pregunta 18
Pregunta
Which of these are uses of sodium hydroxide from the electrolysis of brine?
Respuesta
-
Making margarine
-
Making bleach
-
Making paper
-
Disinfecting swimming pools
-
Making soap
-
Making polyvinylchloride
Pregunta 19
Pregunta
True or false? Electroplating is often done to make production of goods cheaper.
Respuesta
- True
- False
Pregunta 20
Pregunta
True or false? As the anode is made of the plating metal, the electrolyte is not required to contain ions of that metal.
Respuesta
- True
- False
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