Pembahasan Soal 1

Jawab: A

Reaksi

\begin{equation*}
\begin{array}
& \ce{SO2Cl2(g)} & \ce{<=>} & \ce { SO2(g)} & + & \ce{ Cl2(g)} \\
a & & - & & - \\
a \: \alpha & & a \: \alpha & & a \: \alpha \\
a(1 - \alpha) & & a \: \alpha & & a \: \alpha
\end{array}
\end{equation*}

Perbandingan jumlah mol SO₂Cl₂ dan SO₂ adalah 3 : 1

\begin{equation*}
\begin{split}
\frac {a(1 - \alpha)}{a \: \alpha} & = \frac 31 \\\\
\frac {1 - \alpha}{\alpha} & = \frac 31 \\\\
1 - \alpha & = 3 \alpha \\\\
1 & = 4 \alpha \\\\
\alpha & = \frac 14
\end{split}
\end{equation*}