VmL Al2(SO4)3溶液中含ag SO42-,若把此溶液取一半加水稀释至2V mL,则稀释后溶液中Al3+的物质的量浓度为
A.a/576Vmol/L | B.125a/36Vmol/L | C.250a/36Vmol/L | D.125a/72Vmol/L |
VmL Al2(SO4)3溶液中含ag SO42-,若把此溶液取一半加水稀释至2V mL,则稀释后溶液中Al3+的物质的量浓度为
A.a/576Vmol/L | B.125a/36Vmol/L | C.250a/36Vmol/L | D.125a/72Vmol/L |