277561
Which of the following solution has the lowest osmotic pressure?
1 $200 \mathrm{ml}$ of $2 \mathrm{M} \mathrm{NaCl}$ solution
2 $200 \mathrm{ml}$ of $1 \mathrm{M}$ glucose solution
3 $200 \mathrm{ml}$ of $2 \mathrm{M}$ urea solution
4 $200 \mathrm{ml}$ of $1 \mathrm{M} \mathrm{KCl}$ solution
Explanation:
Osmotic pressure is a colligative property it depends upon the number of constituents of solution. And temperature $\begin{aligned} & \Pi=\mathrm{CRT} \text { or } \\ & \Pi=\frac{\mathrm{n}}{\mathrm{v}} \mathrm{RT} \end{aligned}$ $200 \mathrm{ml}$ of $1 \mathrm{M}$ glucose solution have lower molar concentration and unionised.
TS EAMCET 10.08.2021 Shift-II
SOLUTIONS
277567
In the coagulation of a positive sol, the flocculating power of the ions $\mathrm{PO}_{4}{ }^{3-}, \mathrm{SO}_{4}{ }^{2-}$ and $\mathrm{Cl}^{-}$decreases in the order
The minimum amount of an electrolyte required to cause precipitation of one litre of a colloidal solution is called coagulation value of flocculation value of the electrolite for the solution. The reciprocal of coagulation value is regarded as the coagulating power. For coagulation of positive sol, the flocculating power depends on two factors:- (1) Large size of anion (2) High (-ve) charge So, $\mathrm{PO}_{4}{ }^{3-}>\mathrm{SO}_{4}{ }^{2-}>\mathrm{Cl}^{-}$
Kerala-CEE-2020
SOLUTIONS
277576
Which of the following is the most effective in causing coagulation of ferric hydroxide solution?
More the number of ions of a compound after dissociation causing most effective coagulation of ferric hydroxide solution. (i) $\mathrm{KCl} \rightleftharpoons \mathrm{K}^{+}+\mathrm{C}^{-}$ (ii) $\mathrm{KNO}_{3} \rightleftharpoons \mathrm{K}^{+}+\mathrm{NO}_{3}^{-}$ (iii) $\mathrm{K}_{2} \mathrm{SO}_{4} \rightleftharpoons 2 \mathrm{~K}^{+}+\mathrm{SO}_{4}{ }^{2-}$ (iv) $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right] \rightleftharpoons 3 \mathrm{~K}^{+}+\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$ Thus, $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$ has more coagulation of ferric hydroxide solution.
AP-EAMCET (Engg.) 2015
SOLUTIONS
277585
Which is more powerful to coagulate the negative colloid?
- Negative colloid is coagulation by positive ion or vice-versa. - Greater the valency of coagulating ion, greater will be the coagulating power. (i) $\mathrm{ZnSO}_{4} \rightarrow \mathrm{Zn}^{2+}+\mathrm{SO}_{4}^{2-}$ (ii) $\mathrm{Na}_{3} \mathrm{PO}_{4} \rightarrow 3 \mathrm{Na}^{+}+\mathrm{PO}_{4}^{3-}$ (iii) $\mathrm{AlCl}_{3} \rightarrow \mathrm{Al}^{3+}+3 \mathrm{Cl}^{-}$ (iv) $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right] \rightarrow 4 \mathrm{~K}^{+}+\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ Hence, In $\mathrm{AlCl}_{3}$, the valency of positive ion (coagulating ion) is highest, it is the most powerful coagulating agent among the given to coagulate the negative colloid.
NEET Test Series from KOTA - 10 Papers In MS WORD
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SOLUTIONS
277561
Which of the following solution has the lowest osmotic pressure?
1 $200 \mathrm{ml}$ of $2 \mathrm{M} \mathrm{NaCl}$ solution
2 $200 \mathrm{ml}$ of $1 \mathrm{M}$ glucose solution
3 $200 \mathrm{ml}$ of $2 \mathrm{M}$ urea solution
4 $200 \mathrm{ml}$ of $1 \mathrm{M} \mathrm{KCl}$ solution
Explanation:
Osmotic pressure is a colligative property it depends upon the number of constituents of solution. And temperature $\begin{aligned} & \Pi=\mathrm{CRT} \text { or } \\ & \Pi=\frac{\mathrm{n}}{\mathrm{v}} \mathrm{RT} \end{aligned}$ $200 \mathrm{ml}$ of $1 \mathrm{M}$ glucose solution have lower molar concentration and unionised.
TS EAMCET 10.08.2021 Shift-II
SOLUTIONS
277567
In the coagulation of a positive sol, the flocculating power of the ions $\mathrm{PO}_{4}{ }^{3-}, \mathrm{SO}_{4}{ }^{2-}$ and $\mathrm{Cl}^{-}$decreases in the order
The minimum amount of an electrolyte required to cause precipitation of one litre of a colloidal solution is called coagulation value of flocculation value of the electrolite for the solution. The reciprocal of coagulation value is regarded as the coagulating power. For coagulation of positive sol, the flocculating power depends on two factors:- (1) Large size of anion (2) High (-ve) charge So, $\mathrm{PO}_{4}{ }^{3-}>\mathrm{SO}_{4}{ }^{2-}>\mathrm{Cl}^{-}$
Kerala-CEE-2020
SOLUTIONS
277576
Which of the following is the most effective in causing coagulation of ferric hydroxide solution?
More the number of ions of a compound after dissociation causing most effective coagulation of ferric hydroxide solution. (i) $\mathrm{KCl} \rightleftharpoons \mathrm{K}^{+}+\mathrm{C}^{-}$ (ii) $\mathrm{KNO}_{3} \rightleftharpoons \mathrm{K}^{+}+\mathrm{NO}_{3}^{-}$ (iii) $\mathrm{K}_{2} \mathrm{SO}_{4} \rightleftharpoons 2 \mathrm{~K}^{+}+\mathrm{SO}_{4}{ }^{2-}$ (iv) $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right] \rightleftharpoons 3 \mathrm{~K}^{+}+\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$ Thus, $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$ has more coagulation of ferric hydroxide solution.
AP-EAMCET (Engg.) 2015
SOLUTIONS
277585
Which is more powerful to coagulate the negative colloid?
- Negative colloid is coagulation by positive ion or vice-versa. - Greater the valency of coagulating ion, greater will be the coagulating power. (i) $\mathrm{ZnSO}_{4} \rightarrow \mathrm{Zn}^{2+}+\mathrm{SO}_{4}^{2-}$ (ii) $\mathrm{Na}_{3} \mathrm{PO}_{4} \rightarrow 3 \mathrm{Na}^{+}+\mathrm{PO}_{4}^{3-}$ (iii) $\mathrm{AlCl}_{3} \rightarrow \mathrm{Al}^{3+}+3 \mathrm{Cl}^{-}$ (iv) $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right] \rightarrow 4 \mathrm{~K}^{+}+\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ Hence, In $\mathrm{AlCl}_{3}$, the valency of positive ion (coagulating ion) is highest, it is the most powerful coagulating agent among the given to coagulate the negative colloid.
277561
Which of the following solution has the lowest osmotic pressure?
1 $200 \mathrm{ml}$ of $2 \mathrm{M} \mathrm{NaCl}$ solution
2 $200 \mathrm{ml}$ of $1 \mathrm{M}$ glucose solution
3 $200 \mathrm{ml}$ of $2 \mathrm{M}$ urea solution
4 $200 \mathrm{ml}$ of $1 \mathrm{M} \mathrm{KCl}$ solution
Explanation:
Osmotic pressure is a colligative property it depends upon the number of constituents of solution. And temperature $\begin{aligned} & \Pi=\mathrm{CRT} \text { or } \\ & \Pi=\frac{\mathrm{n}}{\mathrm{v}} \mathrm{RT} \end{aligned}$ $200 \mathrm{ml}$ of $1 \mathrm{M}$ glucose solution have lower molar concentration and unionised.
TS EAMCET 10.08.2021 Shift-II
SOLUTIONS
277567
In the coagulation of a positive sol, the flocculating power of the ions $\mathrm{PO}_{4}{ }^{3-}, \mathrm{SO}_{4}{ }^{2-}$ and $\mathrm{Cl}^{-}$decreases in the order
The minimum amount of an electrolyte required to cause precipitation of one litre of a colloidal solution is called coagulation value of flocculation value of the electrolite for the solution. The reciprocal of coagulation value is regarded as the coagulating power. For coagulation of positive sol, the flocculating power depends on two factors:- (1) Large size of anion (2) High (-ve) charge So, $\mathrm{PO}_{4}{ }^{3-}>\mathrm{SO}_{4}{ }^{2-}>\mathrm{Cl}^{-}$
Kerala-CEE-2020
SOLUTIONS
277576
Which of the following is the most effective in causing coagulation of ferric hydroxide solution?
More the number of ions of a compound after dissociation causing most effective coagulation of ferric hydroxide solution. (i) $\mathrm{KCl} \rightleftharpoons \mathrm{K}^{+}+\mathrm{C}^{-}$ (ii) $\mathrm{KNO}_{3} \rightleftharpoons \mathrm{K}^{+}+\mathrm{NO}_{3}^{-}$ (iii) $\mathrm{K}_{2} \mathrm{SO}_{4} \rightleftharpoons 2 \mathrm{~K}^{+}+\mathrm{SO}_{4}{ }^{2-}$ (iv) $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right] \rightleftharpoons 3 \mathrm{~K}^{+}+\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$ Thus, $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$ has more coagulation of ferric hydroxide solution.
AP-EAMCET (Engg.) 2015
SOLUTIONS
277585
Which is more powerful to coagulate the negative colloid?
- Negative colloid is coagulation by positive ion or vice-versa. - Greater the valency of coagulating ion, greater will be the coagulating power. (i) $\mathrm{ZnSO}_{4} \rightarrow \mathrm{Zn}^{2+}+\mathrm{SO}_{4}^{2-}$ (ii) $\mathrm{Na}_{3} \mathrm{PO}_{4} \rightarrow 3 \mathrm{Na}^{+}+\mathrm{PO}_{4}^{3-}$ (iii) $\mathrm{AlCl}_{3} \rightarrow \mathrm{Al}^{3+}+3 \mathrm{Cl}^{-}$ (iv) $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right] \rightarrow 4 \mathrm{~K}^{+}+\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ Hence, In $\mathrm{AlCl}_{3}$, the valency of positive ion (coagulating ion) is highest, it is the most powerful coagulating agent among the given to coagulate the negative colloid.
277561
Which of the following solution has the lowest osmotic pressure?
1 $200 \mathrm{ml}$ of $2 \mathrm{M} \mathrm{NaCl}$ solution
2 $200 \mathrm{ml}$ of $1 \mathrm{M}$ glucose solution
3 $200 \mathrm{ml}$ of $2 \mathrm{M}$ urea solution
4 $200 \mathrm{ml}$ of $1 \mathrm{M} \mathrm{KCl}$ solution
Explanation:
Osmotic pressure is a colligative property it depends upon the number of constituents of solution. And temperature $\begin{aligned} & \Pi=\mathrm{CRT} \text { or } \\ & \Pi=\frac{\mathrm{n}}{\mathrm{v}} \mathrm{RT} \end{aligned}$ $200 \mathrm{ml}$ of $1 \mathrm{M}$ glucose solution have lower molar concentration and unionised.
TS EAMCET 10.08.2021 Shift-II
SOLUTIONS
277567
In the coagulation of a positive sol, the flocculating power of the ions $\mathrm{PO}_{4}{ }^{3-}, \mathrm{SO}_{4}{ }^{2-}$ and $\mathrm{Cl}^{-}$decreases in the order
The minimum amount of an electrolyte required to cause precipitation of one litre of a colloidal solution is called coagulation value of flocculation value of the electrolite for the solution. The reciprocal of coagulation value is regarded as the coagulating power. For coagulation of positive sol, the flocculating power depends on two factors:- (1) Large size of anion (2) High (-ve) charge So, $\mathrm{PO}_{4}{ }^{3-}>\mathrm{SO}_{4}{ }^{2-}>\mathrm{Cl}^{-}$
Kerala-CEE-2020
SOLUTIONS
277576
Which of the following is the most effective in causing coagulation of ferric hydroxide solution?
More the number of ions of a compound after dissociation causing most effective coagulation of ferric hydroxide solution. (i) $\mathrm{KCl} \rightleftharpoons \mathrm{K}^{+}+\mathrm{C}^{-}$ (ii) $\mathrm{KNO}_{3} \rightleftharpoons \mathrm{K}^{+}+\mathrm{NO}_{3}^{-}$ (iii) $\mathrm{K}_{2} \mathrm{SO}_{4} \rightleftharpoons 2 \mathrm{~K}^{+}+\mathrm{SO}_{4}{ }^{2-}$ (iv) $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right] \rightleftharpoons 3 \mathrm{~K}^{+}+\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$ Thus, $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$ has more coagulation of ferric hydroxide solution.
AP-EAMCET (Engg.) 2015
SOLUTIONS
277585
Which is more powerful to coagulate the negative colloid?
- Negative colloid is coagulation by positive ion or vice-versa. - Greater the valency of coagulating ion, greater will be the coagulating power. (i) $\mathrm{ZnSO}_{4} \rightarrow \mathrm{Zn}^{2+}+\mathrm{SO}_{4}^{2-}$ (ii) $\mathrm{Na}_{3} \mathrm{PO}_{4} \rightarrow 3 \mathrm{Na}^{+}+\mathrm{PO}_{4}^{3-}$ (iii) $\mathrm{AlCl}_{3} \rightarrow \mathrm{Al}^{3+}+3 \mathrm{Cl}^{-}$ (iv) $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right] \rightarrow 4 \mathrm{~K}^{+}+\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ Hence, In $\mathrm{AlCl}_{3}$, the valency of positive ion (coagulating ion) is highest, it is the most powerful coagulating agent among the given to coagulate the negative colloid.