Viết phương trình hoá học của phản ứng và cơ chế tạo thành sản phẩm chính khi cho các hợp chất dưới đây tác dụng với nước (có mặt H2SO4 loãng).

\(\begin{array}{l}a)\,C{H_2} = \mathop C\limits_{\left| {} \right.}  - C{H_3}\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}\end{array}\)                                             \[\begin{array}{l}b)\,C{H_3} - C{H_2} - \mathop C\limits_{\left| {} \right.}  = CH - C{H_3}\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}\end{array}\]

b) Phương trình hoá học:

\[\begin{array}{l}\,C{H_3} - C{H_2} - \mathop C\limits_{\left| {} \right.}  = CH - C{H_3} + {H_2}O\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}\end{array}\]\[ \to \left\langle \begin{array}{l}C{H_3} - C{H_2} - \mathop C\limits_{\left| {} \right.} H - \mathop C\limits_{\left| {} \right.} H - C{H_3}\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}\,\,\,\,\,OH\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH\\C{H_3} - C{H_2} - \mathop {\mathop C\limits^{\left| {} \right.} }\limits_{\left| {} \right.}  - C{H_2} - C{H_3}\,(spc)\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}\end{array} \right.\]

Cơ chế phản ứng: