C2H5OH+Na→C2H5ONa H2O+Na→NaOH m(C2H5ONa)=68×0,25x=17x m(NaOH)=40×0,75x=30x 30x-17x=13 x=1 m=46×0,25+18×0,75=25 A #растворы 22 viewsMᴀʀɢᴀʀɪᴛᴀ, edited 18:26
