WorksheetsElectrolysis of Aqueous Electrolytes
Total questions: 15
Worksheet time: 30mins
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B
C
D
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B
C
D
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(e)(i)
positive electrode: oxygen
negative electrode: hydrogen
positive electrode: hydrogen
negative electrode: chlorine
positive electrode: chlorine
negative electrode: hydrogen
positive electrode:oxygen
negative electrode: sodium
(e)(ii)
2H+→H2+2e-
2Cl-→Cl2+2e-
2H++2e-→H2
Na++e-→Na
(f)
water
oxygen
hydrogen
chlorine
(b)(i)
oxygen
chlorine
sodium
hydrogen
(b)(ii)
test: bubble into lime water
result: lime water turns cloudy
test: damp blue litmus paper
result: bleaches to white
test: lighted splint
result: 'pops'
test: glowing splint
result: relights
(b)(iii)
Na++e-→Na
2H+→H2+2e-
2Cl-→Cl2+2e-
2H++2e-→H2
(a)
cells
electrolytes
electrodes
reactants
(b)
solution changes in color
effervescence
metal forming
salt forms
(c)(i)
more hydrogen than oxygen
more oxygen than hydrogen
hydrogen is twice as much oxygen
they are the same volume
(c)(ii)
sulfur
dihydrogen dioxide
water
hydroxide
