Molarity, Molality, Volume & Mass Percent, Mole Fraction & Density - Solution Concentration Problems
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- Опубліковано 14 лип 2024
- This video explains how to calculate the concentration of the solution in forms such as Molarity, Molality, Volume Percent, Mass Percent, and Mole Fraction. It also explains how to calculate the Molarity of the solution given mass percent and density.
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Full 1 Hour 20 Minute Video: bit.ly/3GuiDXd
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Thanks for the videos. I have been following you a good number of times. And I must admit that you are the best. But have a little concern about the second problem of the lesson. Calculating a volume percent. I was told that mass is additive when you are working with percentage concentrations. But volume is not. But I noticed problem 2 while finding V% you added the 25 ml plus the 150 ml to give you 175ml. Why is that so? If the v% formula is V% is the volume of solute divided by the volume of solution. I am not challenging you but just a concern and I want to learn. Thanks.
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29:04 in this question- you can use the formula
p%×d×10/molar mass of solute
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Thank you, sir, for this tutorial. It really helped me. However, I do have one issue, which is that I'm a bit confused in the section concerning the decimal places you utilized in your answers.
me too. i tried solving it with my calculator the answers were correct just the decimals placed were different from the video
To get the v% ,you have to first get the volume of solution.which is volume of solute + volume of solvent,i.e 150ml volume of solvent plus 25ml volume of soulute.. although methanol and water are substances that can be used in dissolving i.e they can both be seen as solvent.But, since the volume of water in this case is higher than that of methanol,he simply made methanol the solute and water the solvent.