Question

The reaction between potassium metal and water produces potassium hydroxide and hydrogen gas.

the correct equation for this reaction is:

A: K + H2O—> KOH + H2
B: K + H2O—>KOH + H
C: 4K + 3H2O—> 4KOH + 2H
D: 2K + 2 H2O—> 2KOH + H2

Answer 1

2K + 2H₂O → 2KOH + H₂

Step-by-step explanation:

The reactants are:

Potassium metal = K

Water = H₂O

The products are:

Potassium hydroxide = KOH

Hydrogen gas = H₂

The reaction equation is given as;

Reactants → Products

2K + 2H₂O → 2KOH + H₂

The reaction is a single displacement reaction