Chemical Engineering - Stoichiometry - Discussion
Discussion Forum : Stoichiometry - Section 1 (Q.No. 5)
5.
The evaporation of aqueous solution of sugar causes its molarity to
Discussion:
17 comments Page 1 of 2.
Sandip said:
1 decade ago
Molarity should increase because due to evaporation the concentration of sugar increases in water which hence increases its molarity.
Vikas said:
1 decade ago
Molarity must increase because solute sugar is not evaporated in this evaporation process and volume of the solvent is decreasing that's why molarity must increases.
Clint said:
1 decade ago
There must be an error with the choices itself. Answer is B but due to some reasons, the letter seem to be moved and adjusted.
Somdev said:
1 decade ago
I agree with other comments. Molarity must increase.
Auchithya said:
10 years ago
Molarity = Number of moles of solute/volume of solution.
Due to evaporation, solute crystals lessen. So volume of solution also reduces. So, no of moles of solute and volume of solution both reduces hence Molarity remains unchanged because molarity pertains to no of moles of solute to particular vol of solution.
Due to evaporation, solute crystals lessen. So volume of solution also reduces. So, no of moles of solute and volume of solution both reduces hence Molarity remains unchanged because molarity pertains to no of moles of solute to particular vol of solution.
Realistic said:
9 years ago
Dear & Respected Auchithya.
Will you please explain your point in detail. I will be thankful to you.
Will you please explain your point in detail. I will be thankful to you.
Diksha said:
9 years ago
Crystals are not lesser because by dissolved and liquid is evaporated crystal remains same.
Tarak said:
8 years ago
Molarity should increase.
Umar shaik said:
6 years ago
In a solution we have both water and solute. In the evaporation process solute doesn't evaporate that means solvent will evaporate. So the total volume of the solution will decrease. When the solution volume decreases then molarity will increase.
Raphael RS said:
5 years ago
It's unchanged, because molarity is nothing but the number of moles of solute present in a solution, the solution contains both solute and solvent so when the solvent get evaporate the molarity of solvent get decreased but the molarity of solute remains constant but it's getting concentrate.
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