chap5q24.tex

\documentclass[fleqn]{exam}
\usepackage{chemfig}
\usepackage{siunitx}

\begin{document}

\begin{questions}
  \setcounter{question}{23}

  \question Balance the following redox equations.

  \begin{parts}
    \part \schemestart \chemfig{U^{4+}} + \chemfig{MnO^{-}_4} \arrow{->} \chemfig{Mn^{2+}} + \chemfig{UO^{2+}_2} \schemestop \space (acidic)
    \vspace{3.0in}

    \setcounter{partno}{2}
    \part \schemestart \chemfig{Fe^{2+}} + \chemfig{Cr_2O^{2-}_7} \arrow{->} \chemfig{Cr^{3+}} + \chemfig{Fe^{3+}} \schemestop \space (acidic)
    \vspace{3.0in}

    \setcounter{partno}{7}

    \part \schemestart \chemfig{CN^{-}} + \chemfig{lO^{-}_3} \arrow{->} \chemfig{l^{-}} + \chemfig{CNO^{-}} \schemestop \space (basic)
    \vspace{3.0in}

    \newpage

    \part \schemestart \chemfig{Sn^{2+}} + \chemfig{H_2O_2} \arrow{->} \chemfig{Sn^{4+}} \schemestop \space (basic)
    \vspace{3.0in}

    \part \schemestart \chemfig{Br_2} \arrow{->} \chemfig{Br^{-}} + \chemfig{BrO^{-}_3} \schemestop \space (basic)
    \vspace{3.0in}

    \part \schemestart \chemfig{HSO^{-}_3} + \chemfig{lO^{-}_3} \arrow{->} \chemfig{l_2} + \chemfig{SO^{2-}_4} \schemestop \space (acidic)
    \vspace{3.0in}

    \setcounter{partno}{12}

    \part \schemestart \chemfig{Mn^{2+}} + \chemfig{HBiO_3} \arrow{->} \chemfig{Bi^{3+}} + \chemfig{MnO^{-}_4} \schemestop \space (acidic)
    \vspace{3.0in}

    \part \schemestart \chemfig{H_2O_2} + \chemfig{Cr{(}OH{)}^{-}_4} \arrow{->} \chemfig{CrO^{2-}_4} \schemestop \space (basic)
    \vspace{3.0in}

    \setcounter{partno}{15}

    \part \schemestart \chemfig{As_2S_3} + \chemfig{NO^{-}_3} \arrow{->} \chemfig{NO} + \chemfig{SO^{2-}_4} + \chemfig{H_3AsO_4} \schemestop \space (acidic)
    \vspace{3.0in}

    \setcounter{partno}{21}

    \part \schemestart \chemfig{KMnO_4} + \chemfig{H_2S} + \chemfig{H_2SO_4} \arrow{->} \chemfig{K_2SO_4} + \chemfig{MnSO_4} + S \schemestop \space (basic)
  \end{parts}

\end{questions}

\end{document}