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CGP GCSE Chem > Electrolysis of Salt gives Hydrogen, Chlorine and NaOH > Flashcards

Electrolysis of Salt gives Hydrogen, Chlorine and NaOH Flashcards

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1
Q

What is concentrated brine electrolysed industrially using?

A

A diaphragm cell

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2
Q

What 3 useful products does it produce?

A

Hydrogen gas
Chlorine gas
Sodium ions

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3
Q

See diagram page 77

A

Ok

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4
Q

Hydrogen gas -

A

Given off at the cathode - 2 hydrogen ions accept 2 electrons to become one hydrogen molecule

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5
Q

Chlorine gas -

A

Given off at anode - 2 chlorine ions lose their electrons and become one chlorine molecule

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6
Q

Sodium ions -

A

Stay in solution and the hydroxide ions from the water are also left behind - sodium hydroxide is left in solution

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CGP GCSE Chem (233 decks)

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