Which metal reacts with cold water violently?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The reactivity of metals with water depends on their position in the reactivity series. Alkali metals like $Potassium$ $(K)$ and $Sodium$ $(Na)$ a

Vedclass · Accepted Answer

Potassium

Vedclass · Answer

(C) The reactivity of metals with water depends on their position in the reactivity series. Alkali metals like $Potassium$ $(K)$ and $Sodium$ $(Na)$ are highly reactive. $Potassium$ reacts violently with cold water to form $Potassium$ hydroxide $(KOH)$ and hydrogen gas $(H_2)$, releasing a large amount of heat which causes the hydrogen to catch fire immediately. The reaction is: $2K(s) + 2H_2O(l) ightarrow 2KOH(aq) + H_2(g) + 	ext{Heat}$.

Similar Questions

Distinguish between the following:
$(i)$ Electrolytic reduction and electrolytic refining
$(ii)$ Mineral and ore
$(iii)$ Alloys and amalgams

Which of the following methods is suitable for preventing an iron frying pan from rusting?

An element $A$ reacts with water to form a compound $B$ which is used in white washing. The compound $B$ on heating forms an oxide $C$ which on treatment with water gives back $B$. Identify $A$,$B$ and $C$ and give the reactions involved.

What are the constituent elements of brass?

What type of oxide is $H_{2}O$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module