What happens when you mix sulfuric acid and water?
As you may know, sulfuric acid is much denser than water, so as you add it to water, its molecules are able to travel within and mix well with the water molecules. However, because water is less dense than sulfuric acid, if you add it to sulfuric acid, its molecules will create a barrier in which you have water on top and sulfuric acid below.
How to prepare 2m sulfuric acid solution?
From the calculation, you need to pipette 4 mL of the 5 M sulfuric acid solution to prepare 10 mL of 2 M sulfuric acid solution. To prepare the 10 mL of 2 M solution, you must first transfer about 5 mL of distilled water into your 10 mL volumetric flask. Next, slowly add your 4 mL of stock solution (sulfuric acid).
What happens when you add solute to a concentrated stock solution?
If you add a certain amount of solvent to a certain amount of concentrated stock solution, you will notice that the amount of solute present in the stock solution is the same amount present in the dilute solution. The only difference is that the dilute solution now contains more water than the stock from which it was prepared.
What is a stock solution in chemistry?
A stock or standard solution is a solution in which you accurately know its concentration. You can make stock solutions in the chemistry laboratory or buy from chemical manufacturers. Once you have a stock solution, you can prepare solutions of lower concentration by diluting the concentrated stock solution.
What is the purpose of adding sulphuric acid?
Sulfuric acid is also a key substance in the chemical industry. It is most commonly used in fertilizer manufacture, but is also important in mineral processing, oil refining, wastewater processing, and chemical synthesis.
Why do we add sulphuric acid before adding water?
If water is added to a concentrated acid, It is highly exothermic process, the heat generated may cause the mixture to splash out and cause burns. When the acid is added to water slowly with constant stirring, the mixture will not splash out.
Why should sulfuric acid be added to water rather than the reverse?
When you mix acid with water, it's extremely important to add the acid to the water rather than the other way around. This is because acid and water react in a vigorous exothermic reaction, releasing heat, sometimes boiling the liquid.
What happens when you add sulfuric acid to water?
Sulfuric acid (H2SO4) reacts very vigorously with water in a highly exothermic reaction. If you add water to concentrated sulfuric acid, it can boil and spit and you may get a nasty acid burn.
Why should you add acid to water?
The reason you add acid to water is that if you add water to acid, the first drop of water reacts immediately, and the heat might be high enough to boil the water instantly, which could spray acid out of the container.
What is the role of sulphuric acid during electrolysis of water?
As sulphuric acid is a strong acid and it will dissociate into ions completely. And during electrolysis of water, as we add sulphuric acid, the number of ions increases and because of these ions, the solution become conducting.
What would happen if dilute H2SO4 is not added to water?
If H2SO4 is not added to water during electrolysis, the conductivity of the water will be low which results in slow electrolysis. When H2SO4 is added, the conductivity increases resulting in quick electrolysis.
How does sulfuric acid absorb water?
The affinity of sulfuric acid for water is sufficiently strong that it will take hydrogen and oxygen atoms out of other compounds; for example, mixing starch (C6H12O6)n and concentrated sulfuric acid will give elemental carbon and water which is absorbed by the sulfuric acid (which becomes slightly diluted): (C6H12O6)n ...
How many molecules are in a dilute solution?
Here is an illustration of a dilute solution prepared from a stock solution: From the illustration above, you can see that there are 7 molecules of solute in the concentrated solution and 7 molecules in the dilute solution. But the dilute solution has more solvent in it than the concentrated solution. Because both solutions contain an equal number ...
What is the difference between dilute solution and stock?
The only difference is that the dilute solution now contains more water than the stock from which it was prepared. In real life, what you just read is similar to you adding more water to your coffee or tea to lighten its taste. As you add more water, you are only increasing the amount of water in the solution, but not the amount ...
What does it mean to dilute a solution?
To dilute means to add a certain amount of solvent (water) to a certain amount of concentrated stock solution. If you add a certain amount of solvent to a certain amount of concentrated stock solution, you will notice that the amount of solute present in the stock solution is the same amount present in the dilute solution.
Why does water react with sulfuric acid?
However, because water is less dense than sulfuric acid, if you add it to sulfuric acid, its molecules will create a barrier in which you have water on top and sulfuric acid below. This unwanted barrier can cause the two chemicals to react explosively ( exothermic reaction ), generating enough energy to break the flask.
Why do we add sulfuric acid to water?
We did this in order to prevent the solution from exploding. As you may know, sulfur ic acid is much denser than water, so as you add it to water, its molecules are able to travel within and mix well with the water molecules. However, because water is less dense than sulfuric acid, if you add it to sulfuric acid, ...
Which has more solvent, concentrated or dilute solution?
But the dilute solution has more solvent in it than the concentrated solution. Because both solutions contain an equal number of solute molecules, it follows that: the moles of chemicals present in the concentrated solution is equal to the moles of chemicals present in the dilute solution. If we translate the previous statement into ...
What is stock solution?
posted on February 10, 2019. A stock or standard solution is a solution in which you accurately know its concentration. You can make stock solutions in the chemistry laboratory or buy from chemical manufacturers. Once you have a stock solution, you can prepare solutions of lower concentration by diluting the concentrated stock solution.
