formula.tex

% sample chemical reactions
% not intended to be compiled alone

% define commands for super and sub scripts in text
\newcommand{\super}[1]{\ensuremath{^{\textrm{#1}}}}
\newcommand{\sub}[1]{\ensuremath{_{\textrm{#1}}}}

% lab on cobalt(II) oxygen adduct complex
\begin{center}
  2C\sub{7}H\sub{6}O\sub{2} (aq) + C\sub{2}H\sub{8}N\sub{2} (aq) $\rightarrow$ C\sub{16}H\sub{16}N\sub{2}O\sub{2} (s) + 2H\sub{2}O (l) \\
    \textit{or} \\
  2[salicylaldehyde] + ethylenediamine $\rightarrow$ salen-H\sub{2} + 2H\sub{2}O \bigskip

    \textbf{and} \bigskip

  C\sub{16}H\sub{16}N\sub{2}O\sub{2} (s) + Co(C\sub{2}H\sub{3}O\sub{2})\sub{2} (s) $\rightarrow$ CoC\sub{16}H\sub{14}N\sub{2}O\sub{2} (s) + 2C\sub{2}H\sub{4}O\sub{2} (aq) \\
    \textit{or} \\
  salen-H\sub{2} + cobalt(II) acetate $\rightarrow$ Co(salen) + 2[acetic acid]
\end{center}


% lab on determining delta_{o} in Cr(III) complexes
\begin{center}
  CrCl\sub{3}$\cdot$6H\sub{2}O (s) + 3[C\sub{2}H\sub{4}(NH\sub{2})\sub{2}] (aq) $\rightarrow$ C\sub{6}H\sub{24}Cl\sub{3}CrN\sub{6} (s) + 6H\sub{2}O (l)\\
    \textit{or} \\
  CrCl\sub{3}$\cdot$6H\sub{2}O + 3[en] $\rightarrow$ [Cr(en)\sub{3}]Cl\sub{3} + 6H\sub{2}O
\end{center}


% lab on preparing optical isomers
\begin{center}
  CoCl\sub{2}$\cdot$6H\sub{2}O + 3[en$\cdot$2HCl] $\rightarrow$ [Co(en)\sub{3}]Cl\sub{2} + 6H\sub{2}O + 6HCl \\
    \textit{then} \\

  [Co(en)\sub{3}]Cl\sub{2} + $\frac{1}{2}$NaOH + $\frac{3}{2}$HCl + $\frac{1}{2}$H\sub{2}O\sub{2} + $\frac{3}{2}$H\sub{2}O $\rightarrow$ [Co(en)\sub{3}]Cl\sub{3}$\cdot \frac{1}{2}$NaCl$\cdot$3H\sub{2}O \bigskip

    \textbf{and} \bigskip

  (+)Co(en)\sub{3}\super{3+} + (+)tart\super{2-} $\rightarrow$ [(+)Co(en)\sub{3}][(+)tart]Cl$\cdot$5H\sub{2}O \\
    \textit{and its optical isomer:} \\
  (-)Co(en)\sub{3}\super{3+} + (+)tart\super{2-} $\rightarrow$ [(-)Co(en)\sub{3}][(+)tart]Cl \bigskip

    \textbf{and} \bigskip

  [(+)Co(en)\sub{3}][(+)tart]Cl + 3I\super{-} $\rightarrow$ [(+)Co(en)\sub{3}]I\sub{3}$\cdot$H\sub{2}O + (+)tart\super{2-} + Cl\super{-} \\
    \textit{and its optical isomer:} \\

  [(-)Co(en)\sub{3}][(+)tart]Cl + 3I\super{-} $\rightarrow$ [(-)Co(en)\sub{3}]I\sub{3}$\cdot$H\sub{2}O + (+)tart\super{2-} + Cl\super{-} \\
\end{center}


% lab on tetraphenylporphyrin and its metal complexes
\begin{center}
  8C\sub{7}H\sub{6}O (aq) + 8C\sub{4}H\sub{5}N (aq) + 3O\sub{2} (g) $\rightarrow$ 2C\sub{44}H\sub{30}N\sub{4} (s) + 14H\sub{2}O (l) \\
    \textit{or} \\
  8[benzaldehyde] + 8[pyrrole] + 3O\sub{2} $\rightarrow$ 2[H\sub{2}TPP] + 14H\sub{2}O \bigskip

    \textbf{and} \bigskip

  C\sub{44}H\sub{30}N\sub{4} (s) + CuC\sub{4}H\sub{8}O\sub{5} (s) $\rightarrow$ CuC\sub{44}H\sub{28}N\sub{4} (s) + 2C\sub{2}H\sub{4}O\sub{2} (aq) + H\sub{2}O (l) \\
    \textit{or} \\
  H\sub{2}TPP + copper(II) ethanoate monohydrate $\rightarrow$ CuTPP + 2[acetic acid] + H\sub{2}O
\end{center}


% lab on kinetics of Cr^{3+} with EDTA
\begin{center}
  3[C\sub{10}H\sub{14}N\sub{2}Na\sub{2}O\sub{8}$\cdot$2H\sub{2}O] (aq) + 4[Cr(NO\sub{3})\sub{3}$\cdot$9H\sub{2}O] (aq) $\rightarrow$ \\ Cr\sub{4}(C\sub{10}H\sub{12}N\sub{2}O\sub{8})\sub{3} (aq) + 6HNO\sub{3} (aq) + 6NaNO\sub{3} (aq) + 42H\sub{2}O (l) \\
    \textit{or} \\
  3[disodium salt-EDTA] + 4[chromium(III) nitrate nonahydrate] $\rightarrow$ tris-EDTA-chromate(III) + 6[nitric acid] + 6[sodium nitrate] + 42H\sub{2}O
\end{center}


% lab on inert atmosphere synthesis of chromous acetate
\begin{center}
  4CrCl\sub{3} (aq) + HgZn (s) $\rightarrow$ 4CrCl\sub{2} (aq) + HgCl\sub{2} (aq) + ZnCl\sub{2} (aq) \\
    \textit{or} \\
  4Cr\super{3+} + HgZn $\rightarrow$ 4Cr\super{2+} + Hg\super{2+} + Zn\super{2+}   (Jones reduction) \bigskip

    \textbf{and} \bigskip

  2CrCl\sub{2} (aq) + 4Na(C\sub{2}H\sub{3}O\sub{2}) (aq) + 2H\sub{2}O (l) $\rightarrow$ Cr\sub{2}(C\sub{2}H\sub{3}O\sub{2})\sub{4}$\cdot$2H\sub{2}O (s) + 4NaCl (aq) \\
    \textit{or} \\
  2[chromium(II) chloride] + 4[sodium acetate] + 2H\sub{2}O $\rightarrow$ chromous acetate + 4NaCl \\
\end{center}