Question

取0.5摩尔每升某金属离子Mn+的溶液10毫升l恰好将0.4摩尔每升的

Answer 1

M n+物质的量 = 0.5*0.01 = 0.005mol

n(OH-) = 0.4*0.0125 = 0.005mol

所以M n+与OH-反应比例为1:1

所以M n+为+1价

n = 1