The chemical reactions that take place while absorbing heat energy are called endothermic reactions. Dissolving potassium nitrate in water is an endothermic process because the hydration of the ions as the crystal dissolves does not provide as much energy as is needed to break the lattice.
Potassium nitrate (KNO3) is a salt of the strong acid HNO3 and the strong base KOH, therefore not hydrolyzed.
Laboratories often use potassium nitrate as a reagent in laboratory experiments because it reacts with many different compounds. For example, it reacts easily with sugar, acids and sulphur.
KNO3 is neither an acid nor a base, it is a neutral salt as it results from the neutralization reaction of the strong acid (HNO3) with a strong base (KOH). The pH value of the aqueous solution of KNO3 is 7. Because a strong acid and a strong base neutralize each other and a neutral solution is formed.
Dissolving potassium nitrate in water is an endothermic process because the hydration of the ions as the crystal dissolves does not provide as much energy as is needed to break the lattice. Such formation of an ionic lattice from gaseous ions is always an exothermic process as bonds are formed.
Potassium nitrate can also be made by neutralizing nitric acid with potassium hydroxide. This reaction is strongly exothermic. On an industrial scale, it is produced by the double displacement reaction between sodium nitrate and potassium chloride.
1 expert answer. The question asks for the mass of potassium nitrate precipitate, but potassium nitrate does NOT form a precipitate.
A mixture of sugar and potassium nitrate is a good rocket fuel because it represents the reaction of solids (nitrate and sugar) to gases (carbon dioxide and water). The expansion creates thrust, which is used to propel the rocket!
KNO3 is a soluble ionic molecule that dissociates completely in an aqueous solution to form potassium cations, K+, and nitrate anions, NO3-.