\(C_2H_5OH+3O_2\underrightarrow{t^o}2CO_2+3H_2O\)
0,2_______0,6
a)\(V_{rnc}=\frac{76,67.15}{100}=11,5005\left(ml\right)\)
=>\(m_{C_2H_5OH}=0,8.11,5005=9,2004\left(g\right)\)
=>\(n_{C_2H_5OH}=\frac{9,2004}{46}=0,2\left(mol\right)\)
\(V_{O_2\left(dktc\right)}=0,6.22,4=13,44\left(l\right)\Rightarrow V_{kk}=5.13,44=67,2\left(l\right)\)
b)\(2C_2H_5OH+2Na\rightarrow2C_2H_5ONa+H_2\)
0,2________________________0,4
\(2H_2O+2Na\rightarrow2NaOH+H_2\)
0,2__________________0,4
\(V_{H_2O}=15-11,5005=3,4995\left(ml\right)\)
=>\(m_{H_2O}=3,4995\left(g\right)\)
=>\(n_{H_2O}=\frac{3,4995}{18}=0,2\left(mol\right)\)
\(V_{H_2}=0,4.22,4+0,4.22,4=17,92\left(l\right)\)