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Elevation Of Boiling Point

CBSE XII Science Chemistry Solutions

HI SIR GOOD MORNING....SIR I  HAVE A DOUBT IN ELEVATION OF BOILING POINT.....

Asked by sinkudad9 5th October 2018 7:57 AM
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JEE Main Chemistry Solutions

Calculate the number of grams of glycerol C3H5(OH)3(MW=92.1g/mol) , that must be dissolved in5 520 gm   grams of water to raise the boiling point to 102.000c

Asked by s.ojaswini17 6th February 2019 1:59 AM
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CBSE XII Science Chemistry Solutions

Please explain the paragraph given in pic How 100 is written in numerator 

Asked by govtsecschoolnayaganv051 10th June 2019 8:44 PM
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CBSE XII Science Chemistry Solutions

Calculate the boiling point of a solution containing 0.45g of camphor (mol. wt. 152) dissolved in 35.4g of acetone (b.p. 56.3°C); Kb per 100 gm of acetone is 17.2°C. IN THIS QUESTION WE USE THE FORMULA = 100 Kb *w2/w1M2 I want to know how we derive this formula in which 100 is in numerator and not 1000 . I know Kb is per 100 g though I am not able to derive this relation 

Asked by govtsecschoolnayaganv051 11th June 2019 1:38 PM
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NEET NEET Chemistry Solutions

A solution M is prepared by mixing ethanol and H2O.The mole fraction of ethanol in mixture is 0.9     . Given: Kf H20-1.86 Kkg/mol ,Kf ethanol-2.0 Kkg/mol ,Kb H2O-0.52 Kkg/mol ,Kb ethanol-1.2 Kkg/mol, Standard freezing point of H20- 273K , Standard freezing point of ethanol- 155.7K , Standard boiling point of H2O- 373K , Standard boiling point of ethanol-351.5K ,vp of pure water -32.8mm Hg,vp of pure ethanol -40mm Hg, mol wt of H2O - 18g/mol, mol wt of ethanol- 46g/mol                                . Consider the solutions to be ideal dilute solutions and solutes to be non volatile and non-dissociative                                                                                                                                        .Ques 1 ) The fp of solution M is: (a) 268.7K ,(b) 268.5 K ,(c) 234.2 K , (d) 150.9 K                          .Ques 2 ) The vp of solution M is: (a) 39.3mmHg ,(b) 36.0mmHg ,(c) 39.5mmHg ,(d) 28.8mmHg    .Ques 3) Wter is added to the solution M such that the mole fraction of water in solution becomes 0.9. The bp of this solution is : (a)380.4K ,(b)376.2K, (c)375.5K ,(d)354.7K

Asked by Balbir 30th July 2019 6:16 PM
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CBSE XII Science Chemistry Solutions

Define Elevation of Boiling Point

Asked by bmoumita4141 3rd March 2020 6:19 PM
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CBSE XII Science Chemistry Solutions

Explain B.pt.elevation and F.pt.depression?

Asked by anukritisingh8103.bmps 15th July 2020 5:52 PM
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CBSE XII Science Chemistry Solutions

Boiling point of water at 750mm of hg is 99.63°C. how much sucrose is to be added to 500g of water such that it boils at 100°C.​​​​​​​

Asked by goyalpavitarta 3rd May 2021 1:25 PM
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NEET NEET Chemistry Solutions

the boiling point of 0.15 molar aqueous solution of an unknown solute is 373.23 K at 1 atm . The molal elevatio constant of water is ______ K kg mol ^(-1)

Asked by rautganesh2255 1st July 2021 9:32 AM
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CBSE XII Science Chemistry Solutions

NaCl is 100 % ionized in 0.02 molal aqueous solution. hence the ratio of elevation in boiling point to molal elevation constant is : 

Asked by mdarsadazizh 31st August 2021 1:02 PM
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CBSE XII Science Chemistry Solutions

solution

Asked by vekariyaparth61 16th May 2022 4:33 PM
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CBSE XII Science Chemistry Solutions

The boiling point of benzene is 353.23k. When 1.80g of a non-volatile solute was dissolved in 90g of benzene , the boiling is raised to 345.11k. Calculate the molar mass of solute (kb=2.53kg mol-1)

Asked by varinder2149 10th December 2023 8:21 PM
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NEET NEET Chemistry Solutions

solutions

Asked by 8239682116rahul 10th April 2024 1:48 PM
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