Question

7 multiple choice 1 point
complete the reaction:
k(s) + h₂o(l) written as hoh → ____ + __________
h₂ and ko
h₂ and koh
kh and ho
h and koh

Explanation:

Step1: Analyze the reaction of potassium with water

Potassium (\(K\)) reacts with water (\(H_2O\)) in a single - displacement reaction. The general form of the reaction of an alkali metal (\(M\)) with water is \(M + H_2O
ightarrow MOH+H_2\).
For \(K\), the reaction is \(2K(s)+2H_2O(l)
ightarrow 2KOH(aq)+H_2(g)\)

Answer:

B. \(H_2\) and \(KOH\)