1 out of 4
2 out of 4
3 out of 4
4 out of 4
H and OH
H+ and OH-
H2 and O
H2O
Not halide, discharged
Halide, discharged
Sulfate, discharged
Copper, discharged
Mercury and Carbon
Mercury and Silver
Silver and Carbon
Copper and Silver
Silver
Chromium
Tin
Nickel
Oxygen
Chloride
Chlorine
Hydrogen
Metals, oxidised, reduced
Atoms, reduced, oxidised
Ions, oxidised, reduced
Ions, reduced, oxidised
Positively
Negatively
Neutrally
Positively
Negatively
Neutrally
Rust removal
Electroplating
Making leather
Manufacture of bleach
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