Add equation by diagram: K-KOH-KCL-K-H2-HCL2.

2K + 2H2O = 2KOH + H2.

KOH + HCl = KCl + H2O.

KCl + Na = NaCl + K.

2K + H2SO4 = K2SO4 + H2.

H2 + Cl2 = 2HCl.

1) We draw up the equation for the reaction between potassium and water, the reaction proceeds with the release of hydrogen and the formation of alkali – KOH.

2) The reaction between alkali and hydrochloric acid proceeds with the formation of a salt – potassium chloride – and water.

3) Potassium chloride reacts with sodium when heated.

4) Potassium -metal, which is before hydrogen in the series of metals, reacts with acids; the reaction proceeds with the release of hydrogen and the formation of a salt – potassium sulfate.

5) The reaction between hydrogen and chlorine proceeds with the formation of hydrogen chloride.