Reactions in Solution: Displacement

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K

Na

Ca

Mg

Al

Zn

Fe

Ni

Sn

Pb

H

Cu

Ag

Au

most active

Zn(s) + CuCl2(aq) = Cu(s) + ZnCl2(aq)

Cu(s) + ZnCl2(aq) = Zn(s) + CuCl2(aq)

Zn(s) + HCl(aq) = H2(g) + ZnCl2(aq)

Cu(s) + HCl(aq) = H2(g) + CuCl2(aq)

• more active elements knock less active elements out of compounds

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Akyminum in a weak bicarbonate solution can be used to clean tarnished silver.