Dilution

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remlap12
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Dilution

Post by remlap12 »

Hi all,

I need to dilute both Ferric III Nitrate and Potassium Thiocyanate from 0.1M to 0.0020M
I'm no mathematician.......can someone give me the simple answer , pleeeeease?!!! :oops: :whistling2:
Regards
remlap12
science support and problem solver :mail:
Marama T
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Joined: 01 Aug 2017, 12:19
Job Title: Laboratory technician
School: College
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Re: Dilution

Post by Marama T »

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Anastasia
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Re: Dilution

Post by Anastasia »

Use the formula
C1 x V1 = C2 x V2
where C is the concentration and V is the volume, 1 is the first solution and 2 is the second

So if you wanted to prepare 100ml of 0.002M solution from a 0.1M solution
V1 = (C2 x V2) / C1
= (0.002M x 0.1L) / 0.1M
= 0.002L which is 2ml
So pipette 2ml of the 0.1M solution into a 100ml volumetric flask then make up with distilled water to the mark

Hope this makes sense...
Marama T
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Joined: 01 Aug 2017, 12:19
Job Title: Laboratory technician
School: College
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Re: Dilution

Post by Marama T »

Or take 20mL of 0.1M and dilute to 1L
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remlap12
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Re: Dilution

Post by remlap12 »

Marama T,

Thank you so much!!!!
:clap3: :D
Regards
remlap12
science support and problem solver :mail:
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macca
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Re: Dilution

Post by macca »

This is another one I use, even the different styles of graph paper are good

https://www.graphpad.com/quickcalcs/molarityform.cfm
Marama T
Posts: 214
Joined: 01 Aug 2017, 12:19
Job Title: Laboratory technician
School: College
State/Location: NSW

Re: Dilution

Post by Marama T »

Oh I like yours better, Macca. Thanks.
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