1)2K+2HF=2KF+H2
AU+H2SO4≠
Pb+H2CO3≠
Cu+H2SO3≠
CA+H2PO4=Ca3(PO4)2+H2
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1)2K+2HF=2KF+H2
AU+H2SO4≠
Pb+H2CO3≠
Cu+H2SO3≠
CA+H2PO4=Ca3(PO4)2+H2