(1)Pt+HNO3+HCl——H2PtCl6+NO↑+________
(2)HClOx+P+________——H3PO4+HCl
(1)3Pt+4HNO3+18HCl====3H2PtCl6+4NO↑+8H2O
(2)5HClOx+2xP+3xH2O====2xH3PO4+5HCl