MOLARITY

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

MOLARITY

Postby 805098281 » Fri Oct 05, 2018 1:08 pm

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

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

Re: MOLARITY

Postby sonalivij » Fri Oct 05, 2018 1:40 pm

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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Re: MOLARITY

Postby Christopher Wendland 4F » Fri Oct 05, 2018 1:43 pm

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
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Joined: Fri Sep 28, 2018 12:28 am

Re: MOLARITY

Postby 505211599 » Fri Oct 05, 2018 2:00 pm

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
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Joined: Fri Sep 28, 2018 12:24 am

Re: MOLARITY

Postby Henry_Phan_4L » Fri Oct 05, 2018 4:02 pm

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

Harshita Talkad 4L
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Re: MOLARITY

Postby Harshita Talkad 4L » Sat Oct 06, 2018 5:10 pm

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
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Re: MOLARITY

Postby mcredi » Sat Oct 06, 2018 8:14 pm

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
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Re: MOLARITY

Postby Dina Geotas 4A » Sun Oct 07, 2018 6:18 pm

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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Re: MOLARITY

Postby SophiaKohlhoff4B » Sun Oct 07, 2018 10:27 pm

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
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Re: MOLARITY

Postby Aili Ye 4L » Sat Oct 13, 2018 8:29 pm

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

Postby 705022748 » Thu Nov 15, 2018 10:23 pm

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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Re: MOLARITY

Postby Daniel Kim 1D » Wed Jun 26, 2019 7:29 pm

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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Re: MOLARITY

Postby nicknavejas1B » Fri Jun 28, 2019 2:23 pm

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
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Joined: Wed Jun 26, 2019 12:15 am

Re: MOLARITY

Postby 205458163 » Sat Jun 29, 2019 2:41 pm

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
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Re: MOLARITY

Postby Junxi Feng 3B » Fri Sep 27, 2019 6:40 pm

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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Re: MOLARITY

Postby Claire Lo 3C » Sat Sep 28, 2019 4:27 pm

Does anyone know the difference between molarity and molality?

ALegala_3I
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Re: MOLARITY

Postby ALegala_3I » Sun Sep 29, 2019 8:42 am

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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Re: MOLARITY

Postby christabellej 3F » Sun Sep 29, 2019 9:10 am

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.


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