Question

to produce potassium chloride by the reaction illustrated you need?

a) sodium chloride + potassium hydroxide
b) potassium sulphate + hydrochloric acid
c) potassium hydroxide + hydrochloric acid
d) sodium hydroxide + hydrochloric acid ​

Answer 1

Answer:

In the laboratory, KCl can be prepared by reacting bases of potassium (such as potassium hydroxide) with hydrochloric acid. The ensuing acid-base neutralization reaction will yield waterand potassium chloride as the products.

Answer 2

Potassium chloride is inexpensively available and is rarely prepared intentionally in the laboratory. It can be generated by treating potassium hydroxide (or other potassium bases) with hydrochloric acid:

KOH + HCl → KCl + H2O

This conversion is an acid-base neutralization reaction. The resulting salt can then be purified by recrystallization. Another method would be to allow potassium to burn in the presence of chlorine gas, also a very exothermic reaction:

2 K + Cl2 → 2 KCl