What Are Salts?
Most people will be able to tell you what salt is. A bunch of clear granules that we use to make our food taste. Well, that's certainly true of table salt, sodium chloride, but did you know that salt actually refers to a very large family of compounds, many with quite different properties and uses to table salt.
Let's start with what a salt is. It's an ionic compound made up of one or more positively charged cat ions and negatively charged and nines. An ionic compound is electrically. Watch this video. If you'd like a refresher on this concept, the cat sign tends to be a metal. And in many common examples is one from group one or two of the periodic table.
The anime is commonly a Haylight from group seven or a member of group six salts made like this, a called inorganic salt. But this is not always the case. The ions can be polyatomic that is made up of more than one. A common example of this would be ammonium salts. You might wonder if all salts are small, transparent crystals, just like table salt.
Certainly not salts come in many different colors. Sodium chromate is yellow. Potassium permanganates is purple and I in di sulfide is shiny and metallic. In fact, it's a mineral commonly called fools. Another common mistake is to think that all salts tastes well salty. Again, this is wrong. Some tastes bitter and some even tastes sweet.
White led diaspora Tate. Unfortunately, it's also poisonous. Here's another more complicated salt with nitrogen in the cat side. It's part of a family called the Diazo Niamh salts, which are all brightly colored. Can you think what they might be used for pause and have a thing? The answer is they used for dye pigments to color our clothes.
If you ever get the chance to enjoy some fireworks, the bright colors you can see are produced by burning the salts of various metals. You might recall learning that's an asset. Plus a base gives you a salt and water, and that's quite right for an inorganic salt. Here's the classic reaction for making sodium chloride.
Hydrochloric acid plus sodium hydroxide equals sodium chloride and water. Here's the thing though. Hydrochloric acid sodium hydroxide and sodium chloride are all water soluble and dissolve to form clear solutions. So the challenge is, can you think how you would monitor this reaction to make sure it is actually happening pulls and have a thing that maybe.
Hey Sam. So you would monitor the pH of the solution while you add the base gradually to the acid by titration, you could use an indicator like methyl orange. It's an orangy red color in acidic solutions, but turn yellow when they are turned basic, the pH would start at around one to two, but as the acid is neutralize and the salt and water formed, it will start to run.
Once neutralized, the final step is to evaporate the water, leaving the salt crystals behind on the sides of your reaction vessel.
Now, while this technique is good to know, we wouldn't ever have to create table salt this way in industry, because nature does the chemistry for us and sodium chloride can either be mined from the ground or evaporated from C1. And don't think this is the only way of making salts either. They can also be formed by introducing a metal to an acid as in this reaction or by combining a metal and a non-metal like a halogen.
As in this reaction, all of these salts are soluble in water, but some salts are highly insoluble and some are what we call sparingly. Meaning only a small amount can dissolve. And the rest stays as crystals salts made with sodium potassium and the ammonium cats, ions, and those made with nitrate are all water-soluble.
But most salts made with carbon it's Ana ions and water insoluble salts dissolved in solution, have an important property, the ability to conduct electricity and we call them electrolytes.