B The following set of solutions are prepared by dissolving the requisite amount

Question

B The following set of solutions are prepared by dissolving the requisite amount of solute in water to obtain the desired concentrations. The pressure of the system is then manipulated such that movement is from the solution listed first to the solution listed second. Classify each set of solutions based on the movement of solvent from the first solution listed to the second solution listed as osmosis or reverse osmosis. 1 MCH3COOH to 0.4 MCH3COOH0.075 M Sucrose to 7.5 M Sucrose0.1 MKCl to 0.05 MKCl3.2 MHNO3 to 1.8 MHNO30.5 MNaCl to 1 MNaCl1.4 MKCl to 2.8 MKCl

Explanation / Answer

In Osmosis is the solvent molecules through a semipermeable membrane from a solution of lower concentration to a solution of higher concentration.

In reverse osmosis, the solvent molecules are flow from a solution of higher concentration to a solution of lower concentration.

1)

1 MCH3COOH to 0.4 MCH3COOH

here solvent molecules move from 1 M (higher concentration) to 0.4 M (lower concentration.)

so this process is reverse osmosis

2)

0.075 M Sucrose to 7.5 M Sucrose

this process is Osmosis

3)

0.1 MKCl to 0.05 MKCl

this process is reverse osmosis

4)

3.2 MHNO3 to 1.8 MHNO3

this process is reverse osmosis

5)

0.5 MNaCl to 1 MNaCl

this process is osmosis

6)

1.4 MKCl to 2.8 MKCl

this process is osmosis

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