Since, carbonic acid is a weaker acid than sodium hydroxide a base , thus sodium carbonate salt so formed in this reaction, is a basic salt. And pH value of sodium carbonate is greater than 7. Since, sodium hydroxide is stronger base than acetic acid, thus salt sodium acetate formed in this neutralization reaction is basic in nature and its pH value is more than 7.
This happens because acetic acid does not neutralize sodium hydroxide completely. MCQs Test. Back to 10th-science-home. Neutral salts i.
Examples of formation of neutral salt with pH value equal to 7 When sodium hydroxide reacts with hydrochloric acid, sodium chloride is formed. Now this means that all the molecules of sodium hydroxide will dissociate, break down and give us ions, sodium ion and hydroxide ion. And if you don't recall the meaning of strong and weak right now, then don't worry. We have talked about this in a great detail in a separate video called Strong and Weak Acid Bases.
So I would suggest you to watch that video and then come back here. Okay, if you already are aware of this, let's move ahead. The acid that we have over here, acetic acid, you will recall that this is a weak acid. Now this means that not all the molecules of this acid are going to dissociate. This acid only dissociates partially, okay? Now that we know the nature of parent acid and base, can you guess what is the nature of the salt?
Pause the video and think about this. Now if you have thought about this, let's see. So we have seen earlier that the nature of the salt depends on the nature of the strong parent.
So over here we have a weak acid but a strong base. That means our salt is also going to be basic in nature. So that's the answer.
We have a basic salt, and with this we have solved the problem. So see, the first step was, from the given salt, try to find out the acid and the base that could have reacted upon this. The second step was to find the nature of the given acid and base. And then, the third step was, from this nature, find out the nature of the salt. Now let's try to do one more example.
So can you pause the video and do all the three steps, and then figure out what is the answer? Pause the video and give it a try. So the first step was to figure out the parent acid and base that could react to form this salt, right? So we know that ions of acids and bases, they exchange position and then we get salt and water. So one way to find out the acid and base is to exchange the ions between the salt and water.
Water I will write it as HOH. To learn more about our GDPR policies click here. If you want more info regarding data storage, please contact gdpr jove.
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Login processing Chapter Acids and Bases. Chapter 1: Introduction: Matter and Measurement. Chapter 2: Atoms and Elements. Chapter 3: Molecules, Compounds, and Chemical Equations.
Chapter 4: Chemical Quantities and Aqueous Reactions. Chapter 5: Gases. Chapter 6: Thermochemistry. Chapter 7: Electronic Structure of Atoms. Chapter 8: Periodic Properties of the Elements. Chapter 9: Chemical Bonding: Basic Concepts.
Chapter Liquids, Solids, and Intermolecular Forces. Chapter Solutions and Colloids. Chapter Chemical Kinetics. Chapter Chemical Equilibrium. Chapter Acid-base and Solubility Equilibria.
Chapter Thermodynamics. Chapter Electrochemistry. Chapter Radioactivity and Nuclear Chemistry. Chapter Transition Metals and Coordination Complexes.
Anilinium chloride : Anilinium chloride is an example of an acid salt. Some salts, such as ammonium bicarbonate NH 4 HCO 3 , contain cations and anions that can both undergo hydrolysis. Predict the pH of a solution of a salt containing cations and anions, both of which participate in hydrolysis.
Basic salts form from the neutralization of a strong base and a weak acid; for instance, the reaction of sodium hydroxide a strong base with acetic acid a weak acid will yield water and sodium acetate. Acid salts are the converse of basic salts; they are formed in the neutralization reaction between a strong acid and a weak base.
The conjugate acid of the weak base makes the salt acidic. For instance, in the reaction of hydrochloric acid a strong acid with ammonia a weak base , water is formed, along with ammonium chloride. The ammonium ion contains a hydrolyzable proton, which makes it an acid salt.
The following is a more complicated scenario in which a salt contains a cation and an anion, both of which are capable of participating in hydrolysis. A good example of such a salt is ammonium bicarbonate, NH 4 HCO 3 ; like all ammonium salts, it is highly soluble, and its dissociation reaction in water is as follows:. However, as we have already discussed, the ammonium ion acts as a weak acid in solution, while the bicarbonate ion acts as a weak base. The reactions are as follows:.
Because both ions can hydrolyze, will a solution of ammonium bicarbonate be acidic or basic? We can determine the answer by comparing K a and K b values for each ion.
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