The Bronsted base in H2S +H2O → H3O^+ + HS^- is H2O
Explanation
According to Bronsted Lowry definition of an base , that is a base is a compound that act as a protons acceptor. These protons are in form of hydrogen ions . H2O in the above equation accept one hydrogen ions to form H3O^+
I believe the correct answer from the choices listed above is option 4. The 3 isomers of pentane have different structural formulas. <span>An </span>isomer<span> is a molecule with the same molecular formula as another molecule, but with a different chemical structure. Hope this answers the question.</span>
Lewis acid and have leaving group