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H.w Q. Calculate the mass_______________82.0245gmol-1 ? Sol- given , No. Of moles in sodium acetate - 0.375 Molar mass - 82.0245 No. Of moles in 500 ml ---> 0.375/1000×500 0.1875 moles Mass of sodium acetate ----> 0.1875 × 82.0245 15.38 g
25:37 molality is better as it deals with mass and mass is constant and doesn't changes with effect of temp, whereas molarity deals with volume which have chances to change.
No morality change with temperature cuz of expansion ya contraction of the liquid with temperature but molality does not change with temperature cuz the mass of solvent does not change with change in temperature.
25:25 as per my weak knowledge , Molality is better as it includes Kilograms(kg) which becomes easy to calculate. Frankly speaking I am just guissing, I dont know I am correct or wrong
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📌Topics : 00:00 :- Introduction to Concentration of Solution 03:36 :- Mass Percentage 06:04 :- Volume Percentage 09:56 :- Parts Per Million 15:51 :- What is Molarity ? 19:48 :- What is Molality ? 29:21 :- Mole Fraction 32:40 :- Important Numerical 1 34:21 :- Important Numerical 2 38:03 :- Important Numerical 3
HW > Ans = 15.375 solution > Let mass is Y Let no. of mole is X X/0.5 [LITRE] = 0.375[Molarity] X = 0.375*0.5 X = 3/16 Y/82[moliqular mass] = X [no. of mole] Y = 15.375
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25:30 molality is better because molarity can be affected by changing the temperature while molality of system is function of mass which does not have any effect of temperature
25:30 Molality is better than molarity because Molality depends on mass and mass is always constant. Whereas molarity depends on volume and volume varies with temperature
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@@Lakshiya2008 molarity = (no. Of moles of solute) ÷ volume of solution => no. of moles = molarity × volume => no. Of moles = 0.375M×0.5L So no. of moles=0.1875mol
Iska answer 153.79593750 hoga because 82.0245×1.8750 karne ke baad answer 15379593750 aata hai aur 8 number multiplication karte samay decimal ke baad aate hai toh answer me last ke 8 number chhod ke point lagana padta hai isiliye answer 153.79593750 aayega. Tu ne 15 ke baad hi point laga diya
25:37 Molality is better than molarity bcoz molarity is temperature dependendent and volume of solution changes with change in temperature of solution . Molality is better bcoz it involves mass which doesn't change with temperature.
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in my opinion molality is better because of the SI unit being dependent on kg rather than Litre, as no of moles also depends on mass and mass of sovent is also nothing but mass as well.
25:37 :- I think molarity is better because for molality you have to take the volume of solution and at this moment solution has just settled down in my brain as the denominator of all the concentration terms so chances of mistakes are less as well as molarity is easier to pronounce 😀.
No, Molality is better than Molarity as m deals with Mass that does not change with the change in temperature whereas M deals with volume which has chances of changing with the change in temperature. Hence Molality is more reliable than Molarity
Molality is considered better for expressing the concentration as compared to molarity because the molarity changes with temperature because of expansion or contraction of the liquid with temperature.
25:35 Molality Is Better Because If we see Solvent Its In kg And We Can Know better If Change the Temperature In Both solution Of Molal Or Molar In molar The Solution Is in litres it May change Their volume As We See In Molal It does not effect in mass Of solution . Hence molality Is Better For Any reason❤
20:38 Sir molaliti is better as it's mass doesn't vary at temperature change but on other hand volume changes while we create a change in temperature and pressure
Molality is a better form of expressing the concentration because it's value is temperature independent whereas the value of molarity is temperature dependent as the volume of solution changes with change in temperature . Hence molality is a better way of expressing concentration of solution
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25:40 molality is better because mass doesn't change in any condition but as in molarity volume can vary from container to container and also at different temperatures.....
25:37 molality is better as it deals with mass and mass is constant and doesn't changes with effect of temp, whereas molarity deals with volume which have chances to change
Topics : 00:00 :- Introduction to Concentration of Solution 03:36 :- Mass Percentage 06:04 :- Volume Percentage 09:56 :- Parts Per Million 15:51 :- What is Molarity ? 19:48 :- What is Molality ? 29:21 :- Mole Fraction 32:40 :- Important Numerical 1 34:21 :- Important Numerical 2 38:03 :- Important Numerical 3
Molarity is better because we don't have to find out the solvent in it we can just work with the composition provided to us in the question iff the mass of solution is given separately
📌Topics : 00:00 :- Introduction to Concentration of Solution 03:36 :- Mass Percentage 06:04 :- Volume Percentage 09:56 :- Parts Per Million 15:51 :- What is Molarity ? 19:48 :- What is Molality ? 29:21 :- Mole Fraction 32:40 :- Important Numerical 1 34:21 :- Important Numerical 2 38:03 :- Important Numerical 3
