Because it is safer: when you add a bit of water to a full container of acid, the acid can react violently and explode in your face. If you add a little bit of acid to water, the reaction would be tiny in comparison, so you have time to react if something goes wrong.
is soluble in water and will fizz when hydrochloric acid is added
The pH of water will decrease when hydrochloric acid, a strong acid, is added to it. This is because the strong acid will increase the concentration of hydrogen ions in the water, leading to a lower pH.
is Ca(OH)2 is soluble in water and will hissing when hydrochloric acid is added
When water is added to a strong acid or base, the concentration of the acid or base decreases because water dilutes the solution. This results in a less concentrated solution of the acid or base.
decrease.
When a nonmetal oxide is added to water, it will form an acid.
When an acid is added to water, base ions are formed through the transfer of protons (H+) from the acid to water molecules. This results in the formation of hydroxide ions (OH-) in the water solution.
HI, Hydrogen iodide, is an ionic compound which will dissociate when added to water. It forms a strong acid, hydroiodic acid.
Adding water after the acid can help to dilute the acid in a controlled manner, minimizing any splashing or spattering that may occur if water were added to the acid. This step also allows for better mixing of the acid and water to ensure uniformity in the solution.
Citric acid dissolves in water in an endothermic reaction.
An acid, such as hydrochloric acid (HCl) or sulfuric acid (H2SO4), is added to water to increase the concentration of hydronium ions (H3O+). This process is known as acidification.
Mixing of acid with water is highly exothermic. Hence acid is added to water.Also, adding acid to water, if the mixture accidentally splashes you will be less likely to be injured by the dilute acid mix. Adding water to acid, if the mixture accidentally splashed you will be more likely to be injured by the still concentrated acid mix.