204. Which statement about the reaction of alkali metals with water is correct?
The reaction rate increases with increasing their atomic number.
From the reaction of each mole of them with water, $22.4\,\text{L}$ of gas is produced at STP conditions.
A flame is observed from the reaction of some of them with water, resulting from combustion.
After the reaction of one gram of each of them with pure water, the pH of the resulting solutions is equal.
\textbf{204.} Which statement about the reaction of alkali metals with water is correct?
\begin{enumerate}
\item The reaction rate increases with increasing their atomic number.
\item From the reaction of each mole of them with water, $22.4\,\text{L}$ of gas is produced at STP conditions.
\item A flame is observed from the reaction of some of them with water, resulting from combustion.
\item After the reaction of one gram of each of them with pure water, the pH of the resulting solutions is equal.
\end{enumerate}