\(C_2H_5OH+K\rightarrow C_2H_5OK+\frac{1}{2}H_2\)
0,5___________________________0,25
\(n_{C2H5OH}=\frac{23}{46}=0,5\left(mol\right)\)
\(V_{H2}=0,25.22,4=5,6\left(l\right)\)
\(\Rightarrow V_{dd\left(C2H5OH\right)}=\frac{23}{0,8}=28,75\left(ml\right)\)
a) nC2H5OH= 0,5(mol)
PTHH: C2H5OH + K -> C2H5OK + 1/2 H2
0,5_____________0,5___0,5_____0,25(MOL)
b) V(H2,đktc)=0,25.22,4=5,6(l)
c)V(C2H5OH)=mC2H5OH/D(C2H5OH)=23/0,8=28,75(ml)