a.\(m_{Br_2}=8g\)
\(n_{Br_2}=\dfrac{8}{160}=0,05mol\)
\(n_{hh}=\dfrac{4,48}{22,4}=0,2mol\)
\(C_2H_2+2Br_2\rightarrow C_2H_2Br_4\)
0,025 0,05 ( mol )
\(\%V_{C_2H_2}=\dfrac{0,025}{0,2}.100=12,5\%\)
\(\%V_{CH_4}=100\%-12,5\%=87,5\%\)
b.
\(m_{C_2H_2}=0,025.26=0,65g\)
\(m_{CH_4}=\left(0,2-0,025\right).16=2,8g\)
c.
\(2C_2H_2+5O_2\rightarrow\left(t^o\right)4CO_2+2H_2O\)
0,025 0,0625 ( mol )
\(CH_4+2O_2\rightarrow\left(t^o\right)CO_2+2H_2O\)
0,175 0,35 ( mol )
\(V_{kk}=V_{O_2}.5=\left(0,35+0,0625\right).22,4.5=46,2l\)