2Na+H2SO4=Na2SO4+H2↑
2K+H2SO4=K2SO4 + H2↑
Hg+H3PO4≠
Zn+H2SO4=ZnSO4 + H2↑
Ca+2HCl=CaCl2+H2↑
2Al+6HBr=2AlBr3 + 3H2↑
2Al+3H2SO4=Al2(SO4)3+3H2↑
2Na+H2S=Na2S+H2↑
Ca+H2S=CaS+H2↑
2Al+6HCl=2AlCl3+3H2↑
P+O2=P2O5
Ca+O2=CaO
2Na+H2=2NaH
Mg+H2=MgH2
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Answers & Comments
2Na+H2SO4=Na2SO4+H2↑
2K+H2SO4=K2SO4 + H2↑
Hg+H3PO4≠
Zn+H2SO4=ZnSO4 + H2↑
Ca+2HCl=CaCl2+H2↑
2Al+6HBr=2AlBr3 + 3H2↑
2Al+3H2SO4=Al2(SO4)3+3H2↑
2Na+H2S=Na2S+H2↑
Ca+H2S=CaS+H2↑
2Al+6HCl=2AlCl3+3H2↑
P+O2=P2O5
Ca+O2=CaO
2Na+H2=2NaH
Mg+H2=MgH2