Gọi CTC là \(C_xH_6\)
\(M_X=21\cdot2=42\)
\(\Rightarrow12x+6=42\Rightarrow x=3\)\(\Rightarrow CTC:C_3H_6\)
\(n_X=\dfrac{2,24}{22,4}=0,1mol\)
\(\Rightarrow m_X=42\cdot0,1=4,2g\)
\(BTC:n_{C\left(X\right)}=3\cdot0,1=0,3mol\)
Do \(KOHdư\Rightarrow n_{K_2CO_3}=n_C=0,3mol\)
\(\Rightarrow m_2=0,3\cdot138=41,4g\)
Đúng 2
Bình luận (0)
