Use the activity series below to predict whether the following reactions will take place.
$\begin{array}{l}
Li>K>Ba>Sr>Ca>Na>Mg>Al>Mn>Zn>Cr>Fe>Cd> \\
Co>Ni>Sn>Pb>H>Sb>Bi>Cu>Ag>Pd>Hg>Pt>Au
\end{array}$
- $Cu + 2KNO_3 \rightarrow Cu(NO_3)_2 + 2K$
- $Ca + ZnBr_2 \rightarrow CaBr_2 + Zn$
$\begin{array}{l}
Li>K>Ba>Sr>Ca>Na>Mg>Al>Mn>Zn>Cr>Fe>Cd> \\
Co>Ni>Sn>Pb>H>Sb>Bi>Cu>Ag>Pd>Hg>Pt>Au
\end{array}$