Symbols for Molarity

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Mallika Singh 1G
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Joined: Sat Aug 24, 2019 12:16 am

Symbols for Molarity

Postby Mallika Singh 1G » Sat Oct 05, 2019 11:48 pm

This is a silly/obvious question, but when referring to molarity, or concentration in general, the book uses "c" or "M" interchangeably right? (just wanted to be sure that there's no difference in meaning for the two symbols. thank you!)

Ariana Iranmahboub1G
Posts: 114
Joined: Fri Aug 09, 2019 12:17 am

Re: Symbols for Molarity

Postby Ariana Iranmahboub1G » Sat Oct 05, 2019 11:52 pm

I believe so because in those instances I assume c represents concentration.

Ronak Naik
Posts: 103
Joined: Sat Jul 20, 2019 12:15 am

Re: Symbols for Molarity

Postby Ronak Naik » Sat Oct 05, 2019 11:55 pm

Yes, they are similar. M and c both refer to the number of moles of solute divided by the total volume in Liters.

Jessica Chen 2C
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Joined: Thu Jul 11, 2019 12:17 am

Re: Symbols for Molarity

Postby Jessica Chen 2C » Sun Oct 06, 2019 11:03 am

Actually, I think the book uses c to represent molarity and M to represent molar mass in equations. I was a bit confused by this too, since M is the symbol for units in molarity (ie .5 M). So in the equation m=cMV, it's basically mass=molarity x molar mass x volume.

105099972
Posts: 5
Joined: Wed Feb 27, 2019 12:15 am

Re: Symbols for Molarity

Postby 105099972 » Sun Oct 06, 2019 6:57 pm

The symbol M and molarity relates to concentration right? And is there a similar symbol for molar mass?

Naomi 3G
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Joined: Wed Sep 18, 2019 12:20 am

Re: Symbols for Molarity

Postby Naomi 3G » Sun Oct 06, 2019 11:36 pm

Jessica Chen 3F wrote:Actually, I think the book uses c to represent molarity and M to represent molar mass in equations. I was a bit confused by this too, since M is the symbol for units in molarity (ie .5 M). So in the equation m=cMV, it's basically mass=molarity x molar mass x volume.

Ya, I agree, in the book M in equations is used for mass per mole and a smaller, capital M following a numerical value represents molarity

Jillian C 4C
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Joined: Sat Jul 20, 2019 12:16 am

Re: Symbols for Molarity

Postby Jillian C 4C » Mon Oct 07, 2019 5:45 pm

Yes, c and M can be used interchangeably because c refers to concentration and M refers to molarity.

Matthew Tsai 2H
Posts: 101
Joined: Wed Sep 18, 2019 12:20 am

Re: Symbols for Molarity

Postby Matthew Tsai 2H » Wed Oct 09, 2019 6:29 pm

Yes, as previous answers mentioned, they refer to the same thing. I believe "c" is used in general reference to some concentration while "M" is a more specific reference to molarity, which is a specific measure defined as mol/L.

lasarro
Posts: 55
Joined: Thu Jul 11, 2019 12:15 am

Re: Symbols for Molarity

Postby lasarro » Wed Oct 09, 2019 9:17 pm

I would practice with just a symbol and be consistent with it. A lot of the workshops that I went to used problems that only use M as the symbol for molarity, so you may want to use that on your test.


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