The dissociation of acid in water releases large amounts of energy in the form of heat. Because this energy cannot disperse easily through acid, it makes the material around it boil; this is a serious danger that can be avoided quite simply by adding acid to water, where the energy required to boil the solution is a lot higher and the heat can disperse more rapidly.
Chlorine & other halogens.
The best acid mixture for cleaning grout off of tiles is muriactic acid and water. Great care must be applied when using this acid as it is extremely dangerous. The acid must be added to the water and not the other way around.
Yes,to dilute acid it is safe to add acid to water than the other way around.
sulphuric acid
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Always add acid to water. This way if you splash what is in the container onto yourself it will be mostly water. The other way around, water to acid, and you would splash mostly acid onto yourself.
"Add acid to water and do what you ought-er" is the memory aid / jingle that my Freshman chemistry instructor used. It applies to most any acid.
Chlorine & other halogens.
The best acid mixture for cleaning grout off of tiles is muriactic acid and water. Great care must be applied when using this acid as it is extremely dangerous. The acid must be added to the water and not the other way around.
Yes,to dilute acid it is safe to add acid to water than the other way around.
is soluble in water and will fizz when hydrochloric acid is added
Add the acid to the water, not the other way around.
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sulphuric acid
1
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.
is Ca(OH)2 is soluble in water and will hissing when hydrochloric acid is added