Zn+2CH3COOH->(CH3COO)2Zn+H2
0,25-------0,5------------------------------0,25
n CH3COOH=\(\dfrac{30}{60}=0,5mol\)
=>m Zn=0,25.65=16,25g
=>VH2=0,25.22,4=5,6l
CH3COOH+C2H5OH->CH3COOC2H5+H2O
1-------------------------------------1
n CH3COOH=1 mol
n C2H5OH=2,17 mol
=>C2H5OH dư
=>m CH3COOC2H5=1.88=88g
=>H=\(\dfrac{55}{88}100=62,5\%\)
1.\(n_{CH_3COOH}=\dfrac{30}{60}=0,5mol\)
\(Zn+2CH_3COOH\rightarrow\left(CH_3COO\right)_2Zn+H_2\)
0,25 0,5 0,25 ( mol )
\(m_{Zn}=0,25.65=16,25g\)
\(V_{H_2}=0,25.22,4=5,6l\)
2.\(n_{CH_3COOH}=\dfrac{60}{60}=1mol\)
\(n_{C_2H_5OH}=\dfrac{100}{46}=2,17mol\)
\(n_{CH_3COOC_2H_5}=\dfrac{55}{88}=0,625mol\)
\(CH_3COOH+C_2H_5OH\rightarrow CH_3COOC_2H_5+H_2O\)
1 2,17 0,625 ( mol )
0,625 0,625 ( mol )
=> H tính théo CH3COOH
\(H=\dfrac{0,625}{1}.100=62,5\%\)