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Unit - 7.1 Methods for the preparation of Hydrogen — CHEMISTRY STD 8 — Question

ICSE BoardEnglish MediumSTD 8CHEMISTRYUnit - 7.1 Methods for the preparation of Hydrogen2 Marks
Question
Name three metals which react with cold water to form hydrogen gas. Support your answer with fully balanced chemical equations.
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Answer

Na, K, Rb reacts readily with water to form hydrogen gas & corresponding hydroxide
$\begin{array}{l}2 Na +2 H 2 O \longrightarrow 2 NaOH + H 2 \uparrow \\ 2 K+2 H 2 O \longrightarrow 2 KOH + H 2 \uparrow \\ 2 Rb +2 H 2 O \longrightarrow 2 RbOH + H 2 \uparrow\end{array}$

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