Understanding Salt Solution
Definition of Salt Solution, Characteristics, Characteristics, Types and Examples: Is a solution obtained from the results of acid and base reactions. Salt is a compound that is formed if hydrogen
Saline solution
Understanding Salt
Salt is one of the needs which is a complement of food needs and is a source of electrolytes for the human body. Salt is generally the result of a reaction between acidic and basic compounds. The solid form is usually in the form of crystals while in the form of a solution the constituent elements of salt will ionize again and make this solution can conduct electricity. Salts composed of alkali metals and alkaline earth will conduct electricity more strongly. The most common and widely used salt is NaCl salt, a white crystalline solid.
In chemistry, salt is an ionic compound consisting of positive ions (cations) and negative ions (anions), so that they will form neutral (without charged) compounds. Salt is formed from the results of an acid and base reaction. Salt hydrolysis is "a breakdown of salt in water that produces acids and or bases."
How can hydrolysis occur?
Salt hydrolysis only occurs IF one or both of the components of the salt are weak acids and or weak bases. If the salt component is strong acid and strong base, then the ion component of the strong acid or strong base will not be hydrolyzed. Based on the explanation above, the cations and anions that can undergo hydrolysis reactions are cations and salt anions which are weak electrolytes. Whereas salt cations and anions including strong electrolytes are not hydrolyzed.
Reaction of salt with water, where the salt component (cation or anion) derived from weak acids or weak bases reacts with water to form H3O + ions (= H +) or OH- ions.
If hydrolysis produces H3O + then the solution is acidic, but if hydrolysis produces OH ions - then the solution is basic.
Definition of Salt Solution
Salt solution is a solution obtained from the results of acid and base reactions. Salt is a compound that is formed if the hydrogen from an acid is replaced by a metal. Salt is named after the metal and the acid that forms it. if dissolved, the salt forms ions in solution, one cation of metal and one anion of acid (Dictionary of pictorial science; 2000).
The Nature of Salt Solution
The Nature of Salt Solution there are 3 kinds
Salt solutions that are neutral are salt formed from strong acids and strong bases or formed from weak acids and weak bases. Example: NaCl, CH3COONH4
Acidic salt solution is salt formed from strong acids and weak bases. Example: NH4Cl, Al2 (SO4) 3
Salt solutions that are basic are salt formed from strong bases and weak acids. Example: CH3COONa, Na2CO3
Salt solutions that are formed from weak acids and weak bases can be acidic, basic, neutral. Because this salt is completely hydrolyzed, the pH value does not depend on the concentration of salt, but depends on the price of Ka and Kb.
If Ka = Kb, the salt solution is neutral (pH = 7)
If Ka = Kb, the salt solution is acidic (pH <7)
If Ka = Kb, the salt solution is basic (pH> 7)
The properties of salt, as follows:
Able to conduct electric current,
does not change the color of litmus red or blue.
If it is formed from strong acids and weak bases, then salt will be acidic. and conversely, if formed from weak acids and strong bases, the salt will be alkaline.
When formed from strong acids and strong bases, the salt will be neutral, for example table salt (NaCl).
Has a pH of 7