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a) 2Al + 3Cl2 --to--> 2AlCl3
b) \(n_{AlCl_3}=\dfrac{13,35}{133,5}=0,1\left(mol\right)\)
PTHH: 2Al + 3Cl2 --to--> 2AlCl3
0,1<-0,15<---------0,1
=> VCl2 = 0,15.22,4 = 3,36(l)
c) mAl = 0,1.27 = 2,7(g)
\(a.PTHH:2Al+3Cl_2\overset{t^o}{--->}2AlCl_3\)
b. Ta có: \(n_{AlCl_3}=\dfrac{13,35}{133,5}=0,1\left(mol\right)\)
Theo PT: \(n_{Cl_2}=\dfrac{3}{2}.n_{AlCl_3}=\dfrac{3}{2}.0,1=0,15\left(mol\right)\)
\(\Rightarrow V_{Cl_2}=0,15.22,4=3,36\left(lít\right)\)
c. Theo PT: \(n_{Al}=n_{AlCl_3}=0,1\left(mol\right)\)
\(\Rightarrow m_{Al}=0,1.27=2,7\left(g\right)\)
\(n_{Al}=\frac{1,08}{27}=0,04mol\)
\(2Al+3Cl_2\rightarrow^{t^o}2AlCl_3\)
a) \(n_{Cl_2}=\frac{3}{2}.0,04=0,06mol\)
\(V_{Cl_2}=0,06.22,4=1,344l\)
b) Cách 1: \(m_{AlCl_3}=m_{Al}+m_{Cl_2}=1,08+71.0,06=5,34g\)
Cách 2: \(n_{AlCl_3}=n_{Al}=0,04mol\)
\(m_{AlCl_3}=0,04.133,5=5,34g\)
\(n_{Al}=\dfrac{1,08}{27}=0,04\left(mol\right)\\ 2Al+3Cl_2\rightarrow\left(t^o\right)2AlCl_3\\ a,n_{Cl_2}=\dfrac{3}{2}.0,04=0,06\left(mol\right)\\ V_{Cl_2\left(\text{Đ}KTC\right)}=0,06.22,4=1,344\left(l\right)\\ b,C1:m_{AlCl_3}=m_{Al}+m_{Cl_2}=1,08+71.0,06=5,34\left(g\right)\\ C2:n_{AlCl_3}=n_{Al}=0,04\left(mol\right)\\ m_{AlCl_3}=0,04.133,5=5,34\left(g\right)\)
a) $2Al + 3Cl_2 \xrightarrow{t^o} 2AlCl_3$
b) $n_{Al} = \dfrac{5,4}{27} = 0,2(mol)$
Theo PTHH : $n_{Cl_2} = \dfrac{3}{2}n_{Al} = 0,3(mol)$
$\Rightarrow V_{Cl_2} = 0,3.24,79 = 7,437(lít)$
c) $n_{AlCl_3} = n_{Al} = 0,2(mol)$
$\Rightarrow m_{AlCl_3} = 0,2.133,5 = 26,7(gam)$
a, PT: \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
Ta có: \(n_{H_2}=\dfrac{6,72}{22,4}=0,3\left(mol\right)\)
Theo PT: \(n_{HCl}=2n_{H_2}=0,6\left(mol\right)\)
\(\Rightarrow m_{HCl}=0,6.36,5=21,9\left(g\right)\)
b, Theo PT: \(n_{Al}=\dfrac{2}{3}n_{H_2}=0,2\left(mol\right)\)
\(\Rightarrow m_{Al}=0,2.27=5,4\left(g\right)\)
\(PTHH:2Al+6HCl->2AlCl_3+3H_2\)
0,2<--0,6<----------0,2<------0,3 (mol)
\(n_{H_2\left(dktc\right)}=\dfrac{V}{22,4}=\dfrac{6,72}{22,4}=0,3\left(mol\right)\)
\(m_{HCl}=n\cdot M=0,6\cdot\left(1+35,5\right)=21,9\left(g\right)\)
\(m_{AlCl_3}=n\cdot M=0,2\cdot\left(27+35,5\cdot3\right)=26,7\left(g\right)\)
a, PT: 2Al+6HCl→2AlCl3+3H2
Ta có: nH2=6,7222,4=0,3(mol)
Theo PT: nHCl=2nH2=0,6(mol)
⇒mHCl=0,6.36,5=21,9(g)
b, Theo PT: nAl=23nH2=0,2(mol)
⇒mAl=0,2.27=5,4(g)
\(n_{AlCl_3}=\dfrac{13,35}{133,5}=0,1\left(mol\right)\)
PTHH: \(2Al+3Cl_2\rightarrow2AlCl_3\)
Theo PT ta có: \(n_{Cl_2}=\dfrac{0,1.3}{2}=0,15\left(mol\right)\)
Thể tích khí clo đã tham gia phản ứng là:
\(V_{Cl_2}=n.22,4=0,15.22,4=3,36\left(l\right)\)
\(n_{AlCl_3}=\dfrac{13,35}{133,5}=0,1\left(mol\right)\)
PTHH: \(2Al+3Cl_2\underrightarrow{t^0}2AlCl_3\)
3mol → 2mol
a mol → 0,1 mol
Gọi a là số mol của \(Cl_2\)
Theo PTHH ta có: \(n_{Cl_2}=a=0,15\left(mol\right)\)
\(\Rightarrow V_{Cl_2\left(đktc\right)}=n_{Cl_2}.22,4=0,15.22,4=3,36\left(l\right)\)