19,879
edits
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→Key Stage 4
===Electrolysis of Molten Ionic Compounds===
: The [[electrolysis]] of [[molten]] [[Ionic Compound|ionic compounds]] [[Decompose (Chemistry)|decompose]]s those [[Ionic Compound|ionic compounds]] in a [[liquid]] [[State of Matter|state]].
: The [[Ionic Compound|ionic compound]] must be [[heated]] and [[melting|melted]] before [[electrolysis]].
: [[Non-metal]] [[ion]]ic [[element]]s or [[compound]]s will be collected at the [[anode]] where they lose their extra [[electron]]s.
===Electrolysis of Aqueous Ionic Compounds===
: The [[electrolysis]] of [[aqueous]] [[Ionic Compound|ionic compounds]] [[Decompose (Chemistry)|decompose]]s those [[Ionic Compound|ionic compounds]] in [[solution]].
: The [[electrolysis]] of [[aqueous]] [[Ionic Compound|ionic compounds]] will produce [[Hydrogen]] [[gas]] if the the [[metal]] [[element]]s is more [[reactivity|reactive]] than [[Hydrogen]].
: [[Non-metal]] [[ion]]ic [[element]]s or [[compound]]s will be collected at the [[anode]] where they lose their extra [[electron]]s.
: [[Metal]] [[ion]]s less [[Reactivity|reactive]] than [[Hydrogen]] will be collected at the [[cathode]] where they gain [[electron]]s.
: [[Metal]] [[ion]]s more [[Reactivity|reactive]] than [[Hydrogen]] will [[Displacement Reaction|displace]] [[Hydrogen]] [[atom]]s in the [[water]] after gaining [[electrons at the [[cathode]]. This causes [[Hydrogen]] [[gas]] to collect at the [[cathode]].