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CBSE - XII Science - Chemistry - Solutions
Why are equimolar solutions of sodium chloride and glucose not isotonic?
Asked by rashmij34
27th February 2024,
4:42 PM
CBSE - XII Science - Chemistry - Solutions
state of phenomenon of osmosis
Asked by premkhare2006
24th January 2024,
9:50 AM
CBSE - XII Science - Chemistry - Solutions
A 10% solution of urea ( molar mass 60) is found to be isotonic with a 5% solution of an unknown non-electrolyte substance.The molecular mass of unknown substance is (a) 40% (b) 50% (c) 45% (d) 30%
Asked by kaushikmisty07
31st December 2023,
11:42 AM
CBSE - XII Science - Chemistry - Solutions
The mass of urea that would be dissolved in 180g of water in order to produce the same lowering of vapour pressure as is produced by dissolving 19g of cane sugar (c12 h22 o11) in 100g water is
Asked by KRISHPATEL.soc
21st June 2021,
5:58 PM
CBSE - XII Science - Chemistry - Solutions
vapour pressure of solution of urea is 736.2 mm at 100 degress celsius calculate osmotic pressure of this solution at 15 degress celsius.
Asked by dhrubajyoti.das
9th May 2021,
9:54 PM
CBSE - XII Science - Chemistry - Solutions
Which is the correct option at same temperature fo r 1 % w/v aqueous solutions of Urea, Glucose and Sugar7 [Molecular Mass : Urea =60 u, Glucose =180 u, Sugar =342 u] (A) n Urea = n Glucose = n Sugar (B) n Urea > n Glucose > n Sugar (C) n Urea > n Sugar > TT Glucose (D) n Sugar > TT Glucose > Jl Urea
Asked by tiwariaatman
31st July 2020,
5:10 PM
CBSE - XII Science - Chemistry - Solutions
Determine the osmotic pressure of the solution prepared by dissolving 25g of K2SO4 in 2L of water at 25 degree centigrade assuming that it is completely dissociated
Asked by yogendrasoni142
8th June 2020,
5:43 PM
CBSE - XII Science - Chemistry - Solutions
please solve this
Asked by santosh357m
28th April 2020,
9:28 AM
CBSE - XII Science - Chemistry - Solutions
Sir, please help me understand how we got the final answer.
Asked by sumayiah2000
5th November 2019,
12:47 PM
CBSE - XII Science - Chemistry - Solutions
Osmotic Pressure of 0.4% urea solution is 1.64 atm and that of 3.42% cane sugar is 2.46 atm. When the above two solutions are mixed , the OP of the solution is (a) 0.82 atm (b) 2.46 atm (c) 1.64 atm (d) 4.10 atm
Asked by Balbir
27th July 2019,
5:02 PM
CBSE - XII Science - Chemistry - Solutions
In barkeley and Hartley method of determining osmotic pressure How the osmotic pressure is balanced by the external pressure so that there is no strain in membrane
Asked by ajaysankhala051
4th June 2019,
2:28 PM
CBSE - XII Science - Chemistry - Solutions
In ncert it is written that isotonic solutions are that solutions that have osmotic pressure . I want to know that what are isosmotic ? Is isotonic and isosmotic are the same thing
Asked by govtsecschoolnayaganv051
4th June 2019,
1:30 PM
CBSE - XII Science - Chemistry - Solutions
a solution containing 6 g of benzoic acid in 50 g of ether (C2H,OC,Hs) has a vapour pressure of 410 mm o mercury at 293 K. Given that the vapour pressure of ether at the same temperature is 442 of calculate the molecular mass of benzoic acid. (Assume that the solution is dilute)
Asked by Jatinaa786
4th April 2019,
5:18 PM
CBSE - XII Science - Chemistry - Solutions
An aqueous solution of urea had a freezong point of -0.40 celsius. Calculate the osmostic pressure of the same solution at 37 C. Asume that the molarity and molality are numerically equal.
Asked by lekhakarthikeyan
29th August 2018,
8:08 PM
CBSE - XII Science - Chemistry - Solutions
A solution containing 4 g of a non-volatile organic solute per 100 mL was found to have an osmotic pressure equal to 500 cm of mercury at 27oC27oC.The molecular weight of solute is: A 14.97 B 149.7 C 1697 D 1.497
Asked by gangaram0
15th July 2018,
2:21 PM
CBSE - XII Science - Chemistry - Solutions
What osmotic pressure would 1.25 molal sucrose solution exhibit at 25 degree Celsius the density of solution is 1.34 gram per ml
Asked by Singh.sonali5775
13th July 2018,
7:15 PM
CBSE - XII Science - Chemistry - Solutions
1 l of aqueous solution of sucrose molar mass 342 gram per mole having wait 10 15 gram is found to record an Osmotic pressure of 4.82 ATM at 293 Kelvin what is the molality of the solution
Asked by Singh.sonali5775
13th July 2018,
7:13 PM
CBSE - XII Science - Chemistry - Solutions
1 M kcl has higher osmoti presaure than 1 M yrea why
Asked by nileshkumartiwary43
18th February 2018,
8:36 PM
CBSE - XII Science - Chemistry - Solutions
the osmotic pressur of glucose soluction is 5.348*10^2Nm^2atm.at 300K.find the amount of glucose in 500ml of soluctiom
Asked by Chaitanya
26th May 2017,
7:12 AM
CBSE - XII Science - Chemistry - Solutions
Define osmotic pressure?
Asked by Topperlearning User
20th June 2016,
3:43 PM
CBSE - XII Science - Chemistry - Solutions
(a) Difference between molarity and molality for a solution. How does a change in temperature influence their values? (b) Calculate the freezing point of an aqueous solution containing 10.50 g of MgBr2 in 200 g of water. (Molar mass of MgBr2 =184 g) (Kf for water = 1.86 K kg mol-1) OR (a) Define the terms osmosis and pressure. Is the osmotic pressure of a solution a colligative property? Explain. (b) Calculate the boiling point of a solution prepared by adding 15.00 g of NaCl to 250.0 g of water.(Kb for water = 0.512 K kg mol-1), Molar mass of NaCl = 58.44 g.
Asked by Topperlearning User
20th June 2016,
3:42 PM
CBSE - XII Science - Chemistry - Solutions
One litre of aqueous solution of Glucose (molar mass = 180g mol-1) weighing 115g is found to record an osmotic pressure of 4.5 atm at 300K. What is the molarity of the solution?
Asked by Topperlearning User
20th June 2016,
3:42 PM
CBSE - XII Science - Chemistry - Solutions
A solution containing 10.2g of glycerin per litre is found to be isotonic with 2% solution of glucose (molar mass = 180 g mol-1). Calculate the molar mass of glycerin.
Asked by Topperlearning User
20th June 2016,
3:42 PM
CBSE - XII Science - Chemistry - Solutions
At 300 K. 18g of glucose present per litre its solution has an osmotic pressure of 4.98 bars .If the osmotic pressure of solution is 1.52 bars on the same temperature, what would be its concentration?
Asked by Topperlearning User
20th June 2016,
3:42 PM
CBSE - XII Science - Chemistry - Solutions
At 80 degree C,the vapour pressure of pure liquid A is 520mm of Hg and that of pure liquid 1000mm Hg.If a mixture solution of A and B boils at 80 degree C and 1 atm pressure,Calculate the amount of A in the mixture.
Asked by Pratik
10th October 2015,
12:41 PM
CBSE - XII Science - Chemistry - Solutions
what is the importance of reverse osmosis
Asked by science field
7th May 2015,
3:26 PM
CBSE - XII Science - Chemistry - Solutions
what are isotonic and hypertonic solutions ??
Asked by mohammedanwar9089
30th July 2014,
12:09 PM
CBSE - XII Science - Chemistry - Solutions
(a) Difference between molarity and molality for a solution. How does a change in temperature influence their values? (b) Calculate the freezing point of an aqueous solution containing 10.50 g of MgBr2 in 200 g of water. (Molar mass of MgBr2 = 184 g) (Kf for water = 1.86 K kg mol-1) Or (a) Define the terms osmosis and osmotic pressure. Is the osmotic pressure of a solution a colligative property? Explain. (b) Calculate the boiling point of a solution prepared by adding 15.00 g of NaCl to 250.0 g of water.(Kb for water = 0.512 K kg mol-1), Molar mass of NaCl = 58.44 g.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Determine the osmotic pressure of a solution prepared by dissolving 2.5 × 10-2 g of K2SO4 in 2L of water at 25°C, assuming that it is completely dissociated. (R = 0.0821 L atm K-1 mol-1, Molar mass of K2SO4 = 174 g mol-1)
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
What is the volume of a solution containing 1 g mole of sugar that will give rise to osmotic pressure of 1 atmosphere at 0°C?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
100g of an organic compound is dissolved per litre of the solution and gave an osmotic pressure of 11.8 atmospheres at 300 K. Calculate the molecular mass of the compound.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Osmotic pressure of a solution containing 7g of dissolved protein per 100 cm3 of solution is 25mm Hg at temperature of 300K. Calculate the molecular mass of protein (R = 0.0821 L atmK-1mol-1).
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Calculate the osmotic pressure of 5% solution of cane sugar at 15°C.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Plants grown in marshy lands generally decay after sometime. Assign reason.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
When a pressure higher than the osmotic pressure is applied on the surface of the solution separated from a solvent by semi permeable membrane, what will happen?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Osmotic pressure is generally preferred for the determining the molecular masses of proteins. Explain.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
When fruits and vegetables which have been dried are placed in water, they swell slowly in size and regain their original form. Assign reason. What is the effect of temperature on this process?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Outer hard shall of two eggs are removed by placing them in dilute HCI. If one is kept in pure water and the other in sodium chloride (NaCl) solution, what will you notice?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
How much glucose, C6H12O6 must be dissolved per litre of the solution that yields osmotic pressure of 2.72 atmospheres at 300 K? R = 0.08221 L atm K-1 mol-1
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
What is the molar concentration of solute particles in human blood if the osmotic pressure is 4.8 atm at normal body temperature of 27°C?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
At what concentration of solute ‘P’ the solution will be isotonic with a 5 percent solution of urea? (Molar mass of ‘P’ = 350 g mol-1)
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
a 1.7 % solution of AGNO3 is isotonic with 3.4% solution of glucose.calculate the degree of ddissociation of AGNO3.{88 %}
Asked by PratibhaPandey
11th May 2014,
6:47 PM
