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Association And Dissociation Free Doubts and Solutions
CBSE - XII Science - Chemistry - Solutions
The formula of degree of dissociation
Asked by kalandi.charan.407
8th February 2024,
1:42 PM
CBSE - XII Science - Chemistry - Solutions
HOW TO FIND VANT OF FACTOR
Asked by RAJAGUPTA
1st January 2020,
8:19 PM
CBSE - XII Science - Chemistry - Solutions
Value of Van't Hoff factor if CH3COOH 60% dissociates and 40% dimerized is–(1) 1.2, (2) 1.4, (3) 1.6, (4) 1.8
Asked by patra04011965
18th July 2019,
4:07 PM
CBSE - XII Science - Chemistry - Solutions
I know that answer is (a) but please explain the reason in detail
Asked by govtsecschoolnayaganv051
16th June 2019,
10:55 PM
CBSE - XII Science - Chemistry - Solutions
We say in a solution made up of a solvent and a solute, the majour component is solvent and the sbstance present in small propotions is solute.
But if we take the case of a 50-50 solution where each component is present at equaly, how can we diffrentiate between a solvent and a solute?
Asked by Prem
15th May 2017,
9:10 PM
CBSE - XII Science - Chemistry - Solutions
why is the i value of sugar and glucose 1
Asked by geethapai2004
3rd July 2016,
3:38 PM
CBSE - XII Science - Chemistry - Solutions
when to use R=8.314 and R=0.008314
Asked by mangesh
25th June 2016,
1:18 PM
CBSE - XII Science - Chemistry - Solutions
Predict the Boiling point of solution prepared by dissolving 25.0g of urea and 25.0 g of thiourea in 100 gram of water. Given for water Kb= 0.52 K Kg mol-1 and Boiling point of pure water is 373.15 K.
Asked by Topperlearning User
20th June 2016,
3:51 PM
CBSE - XII Science - Chemistry - Solutions
0.216molal solution of Cadmium sulphate is prepared in 1000gram of water. The depression in freezing point was measured to be 0.284K. Calculate the Vant hoff factor. The Cryoscopic constant for water is 1.86K Kg mol-1.
Asked by Topperlearning User
20th June 2016,
3:50 PM
CBSE - XII Science - Chemistry - Solutions
What does the line, ' Depending on the vapour pressures of the pure components 1 and 2, total vapour pressure over the solution decreases or increases with the increase of the mole fraction of component 1' ?
Asked by banikratul8
21st March 2016,
1:35 AM
CBSE - XII Science - Chemistry - Solutions
I got a project on chemistry where I have to do an experiment at home. Please suggest me a topic keeping in mind that the required materials can be easily found that can be done at home. Please dont confuse with the name of the chapter and the topic name that Ihave given. It was compulsory to fill those up.
Asked by Bohniman Bhuyan
12th November 2015,
12:44 PM
CBSE - XII Science - Chemistry - Solutions
how to find equivalent weight?
Asked by Dave Agresha
8th May 2015,
4:46 PM
CBSE - XII Science - Chemistry - Solutions
A 0.1 molar NaCl soln. exerts an osmotic pressure of 4.82 atm at 27 degree of dissociation of Nacl.vol=10l w=58.5
Asked by Subhashree Lenka
5th May 2015,
11:49 AM
CBSE - XII Science - Chemistry - Solutions
Consider separate solutions of 0.5 M CH3OH, 0.250 M KCl (aq) and 0.125 M Na3PO4
- (aq). Arrange the above solutions in the increasing order of their Van’t Hoff factor.Give reason also ...
- (aq). Arrange the above solutions in the increasing order of their Van’t Hoff factor.Give reason also ...
Asked by Om Prakash Arya
7th February 2015,
5:56 AM
CBSE - XII Science - Chemistry - Solutions
How can we find the vant Hoff factor in the following question-
calculate the boiling point elevation for a solution prepared by adding 10g of CaCl2 in 200g of water?
(Kb for water =0.512K/m , atomic weight of Ca=40,Cl=35.5)
Asked by Karishma
31st December 2014,
9:54 PM
CBSE - XII Science - Chemistry - Solutions
How to find out when to use 1-alpha is approximately 1 in the Ka equation? Also what is Solubility product, explain clearly.
Asked by Ravi Kumar
2nd August 2014,
4:26 PM
CBSE - XII Science - Chemistry - Solutions
How to find out when to use 1-alpha is approximately i in the Ka equation? Also what is Solubility product, explain clearly.
Asked by Ravi Kumar
2nd August 2014,
4:26 PM
CBSE - XII Science - Chemistry - Solutions
Equimolar solution of glucose and Common salt are not isotonic. Why?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Calculate the amount of NaCl must be added to 1000 ml of water so as to reduce its freezing point by two Kelvin. For water Kf = 1.86 K Kg mol-1 , give that the density of water is 1.0 g ml-1 and NaCl is completely dissociated.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
The freezing point of 0.1molal Potassium chloride solution is 0.372 oC what conclusion can be drawn about its molecular state? For water Kf = 1.86 K Kg mol-1.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
molar solution of common salt exerts osmotic pressure of 1.535 atm at 100K. Calculate its degree of dissociation. Had NaCl not dissociated its osmotic pressure would have been.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Predict the Boiling point of solution prepared by dissolving 3.42g of sugarcane in 100 gram of water. Given for water Kb= 0.52 K Kg mol-1 and Boiling point of pure water is 373.15 K.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
weak electrolyte AB is 5% dissociated in aqueous solution. What is the freezing point of a 0.100 molal aqueous solution of AB? For water Kf = 1.86 K Kg mol-1.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
0.02molal solution of acetic acid is 3% dissociated at 25oC calculate the Osmotic pressure of the solution.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Calculate the amount of KCl must be added to one kilogram of water so as to reduce its freezing point by two Kelvin. For water Kf = 1.86 K Kg mol-1.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
substance X forms trimer when added to Benzene calculates the freezing point of the 0.25 molal solution. The degree of association of the solute is found to be 0.80. The freezing point of the benzene is 5.5oC and its Cryoscopic constant is 5.12 K m-1.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Two molar solution of potassium Ferro cyanide has degree of dissociation 0.70 at 300K.Find out the osmotic pressure of the solution.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
0.90 g of an 1:2 electrolyte was dissolved in 87.90 g of benzene. This raised the boiling point of benzene by 0.250 C. If the molecular mass of the electrolyte is 103.0molar calculate the molal elevation constant for benzene. Given that the solute dissociate with degree of dissociation 0.25.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Calculate the freezing point of a solution containing 0.52 g glucose (C6H12O6) dissolved in 80.20g water. For water Kf = 1.86 K Kg mol-1
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
At 25 degree celcius benzene and toulene have density .879 and .876 g/ml respectively . assuming that benzene and toulene are ideal solutions. establish the equation alpha(degree of association or dissociation) = 1/100[.879v + .867 (100-v)] where v is the volume of benzene
Asked by PratibhaPandey
19th May 2014,
2:59 PM
