3}}-CH=C{{H}_{2}}+{{H}_{2}}O\xrightarrow{{{H}_{2}}S{{O}_{4}}}\UNDERSET{2{}^\circ \,ALCOHOL}{\mathop{C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}}}\,\]\[C{{H}_{3}}-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}+{{H}_{2}}O\xrightarrow{{{H}_{2}}S{{O}_{4}}}\underset{3{}^\circ \,alcohol}{\mathop{C{{H}_{3}}-\underset{OH}{\overset{C{{H}_{3}}}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-C{{H}_{3}}}}\,\]ADDITION follows Markovnikov's RULE.