Consider the statement: Solid Mg added to 2M HCl. In the first 10 seconds,the temperature of container increased by $1^0C$ and 20ml of $H_2$ was produced. Determine rate of reaction.

Question

$\begin{array}{1 1} 1\;ml \;lH_2/s \\ 2 \;ml\;H_2/s \\ 3 ml\;HCl /s \\ 0.05\;mol \;HCl /s\end{array}$