## MOLARITY

805098281
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Joined: Fri Sep 28, 2018 12:26 am

### MOLARITY

Could someone please clarify molarity to me and how it is used in experiments. I don't understand the importance of it..

sonalivij
Posts: 70
Joined: Fri Sep 28, 2018 12:27 am

### Re: MOLARITY

Molarity is basically the measure of the concentration of a solution in moles of a solute (which is the substance being dissolved) over the liters of solution (which is the substance the solute is being dissolved in). Something helpful about molarity is that if it is given, it can be used to find unknown amounts of solvent or solute.

Christopher Wendland 4F
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Joined: Fri Sep 28, 2018 12:29 am

### Re: MOLARITY

Molarity is a measure of the concentration of a chemical species in a solution. It is telling you how many moles of a chemical species there are in a single liter of solution. It can be used to find many different values in relation to a chemical reaction if it is done in a solution.

505211599
Posts: 60
Joined: Fri Sep 28, 2018 12:28 am

### Re: MOLARITY

Molarity is essentially a quantity used to define the concentration of a substance in solution. It can be used as a conversion factor to determine the moles of a substance or volume of a substance.

Henry_Phan_4L
Posts: 68
Joined: Fri Sep 28, 2018 12:24 am

### Re: MOLARITY

Molarity is moles of solute in liters of solution. The unit for molarity is mol/L.

Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

### Re: MOLARITY

Molarity is also important for dilution problems because it can be used in the equation (Minitial)(Vinitial)=(Mfinal)(Vfinal) to determine concentrations, volumes, or moles of the solute before or after the solution has been diluted.

mcredi
Posts: 63
Joined: Fri Sep 28, 2018 12:16 am

### Re: MOLARITY

Molarity is the number of moles of solute per liter of solution and can be calculated by Molarity= mol solute/L of solution

Dina Geotas 4A
Posts: 61
Joined: Fri Sep 28, 2018 12:29 am

### Re: MOLARITY

Molarity is the moles of solute divided by the liters of the solution. You can use it during dilution calculations!

SophiaKohlhoff4B
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Joined: Fri Sep 28, 2018 12:16 am

### Re: MOLARITY

With regards to molarity when diluting a solution, it is important to remember that the moles of solute remain the same. The unknown volume or mass can be computed by plugging known values into: M(initial)xV(initial) = M(final)xV(final)

Aili Ye 4L
Posts: 58
Joined: Fri Sep 28, 2018 12:16 am

### Re: MOLARITY

Molarity's importance lies in how it defines the concentration of the solution and acting as a measurement of moles of solute per liter of solution. It is a big part of dilution calculations since moles of solute stay the same, so it is easy to calculate the molarity when knowing how much solution was added.

705022748
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Joined: Fri Sep 28, 2018 12:25 am

### Re: MOLARITY

Molarity is the measure of concentration of a substance in a solution and is used to calculate concentrations, volumes, or moles of a solution, using M(initial)xV(initial) = M(final)xV(final)

Daniel Kim 1D
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Joined: Wed Oct 03, 2018 12:17 am

### Re: MOLARITY

Most of the time in chemistry, you will be using moles to compare two elements, compounds, or solutions. Considering this, the M1V1 = M2V2 comes from. Molarity = moles/volume so you are comparing the moles in the form of Molarity1*Volume1 = Molarity2*Volume2

nicknavejas1B
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Joined: Wed Nov 15, 2017 3:04 am
Been upvoted: 1 time

### Re: MOLARITY

I made the concept of molarity more clear to myslelf by just thinking of it as concentration, it helps me but it could also could complicate things so be weary

205458163
Posts: 33
Joined: Wed Jun 26, 2019 12:15 am

### Re: MOLARITY

It is the concentration of a certain substance in the solution. You can use it to solve how much substance you have to put to make a certain concentration of solution, such as 100ml 80% KCl solution need how much solid KCl.

Junxi Feng 3B
Posts: 35
Joined: Sat Sep 14, 2019 12:17 am

### Re: MOLARITY

Molarity is number of moles per liter of solution. Molarity is important in experiments because it acts like the specific dosage that is needed in different reactions. Different molarity may result in different amount of products in a reaction.

Claire Lo 3C
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Joined: Sat Aug 17, 2019 12:18 am

### Re: MOLARITY

Does anyone know the difference between molarity and molality?

ALegala_3I
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Joined: Thu Jul 11, 2019 12:17 am

### Re: MOLARITY

Claire Lo 3C wrote:Does anyone know the difference between molarity and molality?

Molarity is moles of solute per liter of solution(mol/L). Molality is the moles of solute per kilogram of solvent (mol/kg). While both have the same values in the numerator, they differ in the denominator. For the denominator of molarity, you are looking at the combined volume of the solvent and solute, or the total solution. For molality, you are only looking at the mass of the solvent.

christabellej 3F
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Joined: Sat Aug 17, 2019 12:17 am

### Re: MOLARITY

Hi! just to add on to the post above, molarity is notated with symbol M while molality is notated with symbol m. Molarity, the moles of solute per liter solution, and molality, the moles solute per kilogram solvent, is similar to each other in room temperature aqueous solutions. The molality measurement is often used for solutions with temp change.