1,
m(соли)=300*30/100=90г
m(раствора)=300-50=250г
w=90*100/250=36%
2
m(иода)=200*5/100=10г
m2(иода)=10+30=40г
m(раствора)=200+30=230г
w=40*100/230=17,4%
3
n(HCI)=67,2/22,4=3моль
M(HCI)=36,5г/моль
m(HCI)=36,5*3=109,5г
m(раствора)=700+109,5=809,5г
w=109,5*100/809,5=13,5%
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1,
m(соли)=300*30/100=90г
m(раствора)=300-50=250г
w=90*100/250=36%
2
m(иода)=200*5/100=10г
m2(иода)=10+30=40г
m(раствора)=200+30=230г
w=40*100/230=17,4%
3
n(HCI)=67,2/22,4=3моль
M(HCI)=36,5г/моль
m(HCI)=36,5*3=109,5г
m(раствора)=700+109,5=809,5г
w=109,5*100/809,5=13,5%