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In Which of the following solution, RBC get burst ? $ (Molecular wt, CaCl_2=111, FeCl_3=162.5, glucose=180 and urea=60 gm/mole)$ (Assume that ionic solid completely dissociates in aqueous solution)
In Which of the following solution, RBC get shrinks ?$ (Molecular wt, CaCl_2=111, FeCl_3=162.5, glucose=180 and urea=60 gm/mole)$ (Assume that ionic solid completely dissociates in aqueous solution)
$ FeCl_3 ionizes 80 \% in their aqueous solution, then what will be the value of Vant ‘Hoff factor i? $
The van 't Hoff factor (i) represents the number of particles each molecule dissociates into in solution. If FeCl3 ionizes 80% into Fe3+ and 3Cl- ions, the average number of particles per molecule is 1 + 0.8(3) = 3.4, so the van 't Hoff factor is 3.4.
A substances associates in their solution as dimer (or bimolecule), then what will be the value of Van’t hoff factor i ?
$ When association of any substance takes place in a solution then degree of association is \leq 1 $ $ \therefore 0 \lt { i-1 \over {1 \over n } - 1 } \leq 1 $ $ \therefore 0 \lt { 1- I \over 1 - { 1 \over n} } \leq 1 $ $ \therefore 0 \lt 1 -I \leq 1 - { 1 \over n} $ $ \therefore - 1 \lt - i \leq - { 1 \over n } $ $ \therefore 1 \gt i \geq { 1 \over n } $ Here n = 2 ( given ) $ \therefore 1 \gt i \geq { 1 \over 2 } means 0.5 \leq i \lt 1 $
The solute remains as dimer in the m-molal solution; then elevation in boiling point irrelevant with the solution is -
For association ( given) n = 2 $ \therefore I \geq { 1 \over 2 }$ $ \therefore imKf \geq { mKf \over 2 } $ $ \therefore \triangle Tf \geq { mKf \over 2 } $
Which of the following ratio is irrelevant formula mass and experimental molecular weight obtained from colligative properties of solution of ionic solid of AB type ?
$$ I = { \triangle T_{ob} \over \triangle T_{cal } } = { \pi_{ob} \over \pi_{cal} } = { M \over M_{ob} } $$ where M = Actual molecular mass of solute Mob = experimental molecular mass of solute For AB type ionoc compound $ I \leq 2 $ $ \therefore { M \over M_{ob} } \leq 2 $ $ 5 :2 \gt 2 :1 $
Which of the following ratio of correct molecular wt (formula weight) and experimental molecular weight obtained from colligative properties of solution of ionic solid of AB type is possible ?
A substance associates as trimer in their solution, then which of the following ratio is irrelevant for real molecular weight and experimental molecular weight obtained from colligative properties of solution ?
Which of the following unit of concentration is common in the field of pharmacy ?
A substance associates as trimer in their solution, then what would be the maximum freezing point of their m molal solution is positive ?
The substance forms trimmer in a solution due to association $$ \therefore { 1 \over 3 } \leq i\lt 1 $$ $$ \therefore { mkf \over 3 } \leq imKf \lt mKf $$ $$ \therefore { mkf \over 3 } \leq \triangle Tf \lt mKf $$ $$ \therefore -mKf \lt - \triangle Tf \leq - { mKf \over 3 } $$ $$ \therefore T ^ \circ _f - mKf \lt T ^ \circ _f - \triangle Tf \leq T ^\circ _f - { mKf \over 3 } $$ $$ \therefore T ^\circ _f - mKf \lt Tf \leq T ^ \circ _f - { mKf \over 3 } $$
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