Concentration of solution Watch

lalala45612
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Hello, just want to ask what's the difference betwen g/dm^3 and mol/dm^3. Thanks
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L'Evil Fish
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Well if I have idk, not a great example but:

36.5 grams of solid HCl dissolved in 1dm^3
That's 36.5g/dm^3

But Moles = mass/mr so I have 1 mol of it. Which would make it 1moldm^-3 or 1M
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lalala45612
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(Original post by L'Evil Fish)
Well if I have idk, not a great example but:

36.5 grams of solid HCl dissolved in 1dm^3
That's 36.5g/dm^3

But Moles = mass/mr so I have 1 mol of it. Which would make it 1moldm^-3 or 1M
Soooo, it's basically the same right?
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L'Evil Fish
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(Original post by lalala45612)
Soooo, it's basically the same right?
Just different forms
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charco
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No, one is the actual mass per litre of solution and the other is the number of moles per litre.

If you have two different salts with the same mass per litre they will have different moles per litre.
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L'Evil Fish
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(Original post by charco)
No, one is the actual mass per litre of solution and the other is the number of moles per litre.

If you have two different salts with the same mass per litre they will have different moles per litre.
Isn't that obvious?
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lalala45612
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Ok thanks guys =)
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charco
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(Original post by L'Evil Fish)
Isn't that obvious?
Clearly not to the OP
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chuckster111
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How do you find the concentration of the undiluted solution of the acid in titrations? If possible, could you explain it in terms of ratios e.g. 11.2cm3 (result of titre) : 0.002654 mol (moles in that amount).

My ISA's tomorrow
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KaylaB
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(Original post by lalala45612)
Hello, just want to ask what's the difference betwen g/dm^3 and mol/dm^3. Thanks
They are both concentrations of solutions, but written another way, and due to n=m/mr you would convert mol/dm^3 to g/dm^3 by multiplying by the mr of the solution
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