Дано
m(ppaKOH)=150 g
W(KOH)=25%
HCL
----------------------
m(KCL)-?
V(H2O)-?
m(KOH)=m(ppaKOH)*W(KOH) / 100% =150*25%/100%=37.5 g
37.5 X Y
KOH+HCL-->KCL+H2O
56 74.5 18
M(KOH)=56 g/mol
M(KCL)=74.5 g/mol
M(H2O)=18 g/mol
X(KOH)=37.5*74.5/56=49.89 g
Y(H2O)=37.5*18 / 56=12.05 g
p(H2O)=1 g/mL
V(H2O)=m(H2O) / p(H2O) = 12.05 / 1= 12.05 mL
ответ 49.89 г , 12.05 мл