PTHH : 2Al     +     6HCl  --> 2AlCl3   +    3H2 ↑   (1)

n_AlCl3 = \(\dfrac{m}{M}=\dfrac{13,35}{27+35,5.3}=0.1\left(mol\right)\) 

Từ (1) => n_HCl   =   2n_H2  = 0.2 (mol)

=> m_HCl = n.M  =  0.2 x  36.5 = 7.3 (g)

\(PTHH:2Al+6HCl\rightarrow2AlCl_3+3H_2\\ n_{AlCl_3}=\dfrac{m}{M}=\dfrac{13,35}{133,5}=0,1\left(mol\right)\\ Theo.PTHH:n_{HCl}=3.n_{AlCl_3}=3.0,1=0,3\left(mol\right)\\ m_{HCl}=n.M=0,3.36,5=10,95\left(g\right)\)

\(d_{\dfrac{A}{H_2}}=32\\ M_A=32.2=64\left(\dfrac{g}{mol}\right)\)

\(m_S=\dfrac{50.64}{100}=32g\\ m_O=64-32=32g\\ n_S=\dfrac{32}{32}=1mol\\ n_O=\dfrac{32}{16}=2mol\\ CTHH:SO_2\\ \Rightarrow B\)

D

D

Dcm giúp tớ với

Nhanh nhanh dùm đi mà

Đang gấp dm

\(d\dfrac{X}{SO_2}=2,5\Rightarrow X=2,5.64=160\left(\dfrac{g}{mol}\right)\)

Câu 30

\(n_{CO_2}=\dfrac{11}{44}=0,25\left(mol\right)\)

\(V_{CO_2}=0,25.22,4=5,6\left(l\right)\)

\(n_{C_2H_2}=\dfrac{13}{26}=0,5\left(mol\right)\\ V_{C_2H_2}=0,5.22,4=11,2\left(l\right)\)