The following solutions are prepared by dissolving the requisite amount of solute in water to obtain the desired concentrations. Rank the solutions according to their respective osmotic pressures in decreasing order assuming the complete dissociation of ionic compounds. Rank from highest to lowest osmotic pressure. To rank items as equivalent, overlap them. A. 1 M MgCl2
B. 1 M KCI
C. 1 M C12
D. H22011
1. Highest osmotic pressure
2. Lowest osmotic pressure

1. Highest osmotic pressure : 1 M

2. Lowest osmotic pressure:  1 M

Explanation:

= osmotic pressure

i = Van'T Hoff factor  

C = concentration  

T = Temperature  

1. For 1M  

, i= 3 as it is a electrolyte and dissociate to give 3 ions.

2. For 1 M

, i= 2 as it is a electrolyte and dissociate to give 2 ions.

3. For  1M

, i= 1 as it is a non electrolyte and do not dissociate.  

Thus as vant hoff factor is highest for thus osmotic pressure is highest for 1 M

And as vant hoff factor is lowest for thus osmotic pressure is lowest for  1 M

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.