Bài 1:
\(CaCO_3\rightarrow\left(t^o\right)CaO+CO_2\uparrow\\ n_{CaO\left(LT\right)}=n_{CaCO_3}=0,1\left(mol\right)\\ Nhưng:n_{CaO\left(TT\right)}=0,08\left(mol\right)\\ \Rightarrow H=\dfrac{n_{CaO\left(TT\right)}}{n_{CaO\left(LT\right)}}.100\%=\dfrac{0,08}{0,1}.100=80\%\)
Bài 2:
\(2Na+Cl_2\rightarrow\left(t^o\right)2NaCl\\ n_{NaCl}=\dfrac{4,68}{58,5}=0,08\left(mol\right)\\ \Rightarrow n_{Na\left(LT\right)}=n_{NaCl}=0,08\left(mol\right)\\ n_{Cl_2\left(LT\right)}=\dfrac{0,08}{2}=0,04\left(mol\right)\\ Vì:H=80\%\\ \Rightarrow n_{Na\left(TT\right)}=\dfrac{0,08}{80\%}=0,1\left(mol\right)\\ n_{Cl_2\left(TT\right)}=\dfrac{0,04}{80\%}=0,05\left(mol\right)\\ m_{Na\left(TT\right)}=0,1.23=2,3\left(g\right)\\ V_{Cl_2\left(TT,đktc\right)}=0,05.22,4=1,12\left(l\right)\)
