Flashcards
Electrolysis - basic 2
Flashcards do conjunto (11)
- 1Reduction is...Loss of oxygen and gain of electrons
- 2Oxidation is...Loss of electrons and gain of oxygen
- 3What do anions lose at the anode...Electron
- 4What do cations gain at the cathode...electrons
- 5What does this lead to...Charged ions become atoms or molecules
- 6Cathode reaction Zn(2+)+2e(−)→Zn is an example of...Reduction as it loses electrons
- 7Anode reaction: 2Cl(−)→Cl2+2e(−) is an example of...Oxidation as it gains electrons
- 81. During electrolysis...Copper atoms in the anode lose two electrons to become copper ions
- 92. During electrolysis...These ions are attracted to the cathode, where they gain two electrons and are deposited as pure copper
- 103. During electrolysis...Anode loses mass, cathode gains mass
- 114. During electrolysis...Impurities from the ions collect as a sludge beneath the anode