Compound PdCl4.6H2O is a hydrated complex, 1 molal aqueous solution of it has freezing point 269.28 K. Assuming 100 % ionization of complex, the molecular formula of the complex is-

(Kf for water = 1.86 K kg mole-1)

1. [Pd(H2O)6]Cl4

2. [Pd(H2O)4Cl2]Cl2.2H2O

3. [Pd(H2O)3Cl3]Cl.3H2O

4. [Pd(H2O)Cl4]4H2O

Subtopic:  Depression of Freezing Point |
 57%
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In a cold climate frozen causing damage to radiator of a car. Ethylene glycol is used as antifreezing agent. The amount of ethylene glycol to be added to 4 kg of water to prevent it from freezing at -6°C[kf for water=1.85 k kg mol-1]

1. 204.22 g

2. 804.32 g

3. 602 gm

4. 401 gm

Subtopic:  Depression of Freezing Point |
 70%
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K4[Fe(CN)6] is 60% ionised. Then the value of Van't Hoff factor is

1. 1.6

2. 2.4

3. 3

4. 3.4

Subtopic:  Van’t Hoff Factor |
 70%
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If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be?

(1) doubled

(2) halved

(3) tripled

(4) unchanged

Subtopic:  Depression of Freezing Point |
 61%
From NCERT
NEET - 2017
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The temperature dependent term among the following is -

1. Molality 2. Molarity
3. Mole fraction 4. Weight percentage
Subtopic:  Concentration Terms & Henry's Law |
 83%
From NCERT
NEET - 2017
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Links
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The van't Hoff factor [i] for a dilute aqueous solution of the strong electrolyte barium hydroxide is?

(1) 0

(2) 1

(3) 2

(4) 3

Subtopic:  Van’t Hoff Factor |
 61%
From NCERT
NEET - 2016
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Which one of the following is incorrect for ideal solution ?

(1) Hmix=0

(2) Umix=0

(3) P=Pobs-Pcalculated by Raoul's law = 0

(4) Gmix=0

Subtopic:  Introduction & Colligative properties |
 70%
From NCERT
NEET - 2016
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At 100°C the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If Kb = 0.52, the boiling point of this solution will be

(1) 100°C

(2) 102°C

(3) 103°C

(4) 101°C

Subtopic:  Relative Lowering of Vapour Pressure | Elevation of Boiling Point |
 51%
From NCERT
NEET - 2016
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Which of the following statements about the composition of the vapour over an ideal 1:1

molar mixture of benzene and toluene is correct? Assume that the temperature is

constant at 25°C.

(Given, vapour pressure data at 25°C, benzene = 12.8 kPa, toluene = 3.85 kPa)

1. The vapour will contain a higher percentage of toluene

2. The vapour will contain equal amounts of benzene and toluene

3. Not enough information is given to make a prediction

4. The vapour will contain a higher percentage of benzene

Subtopic:  Relative Lowering of Vapour Pressure |
 54%
From NCERT
NEET - 2016
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Which one is not equal to zero for an ideal solution?

1. ΔHmix 

2. ΔSmix

3. ΔVmix

4. ΔP=PObserved-PRaoult

Subtopic:  Introduction & Colligative properties |
 80%
From NCERT
NEET - 2015
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