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CBSE Class 12-science Answered

Explain B.pt.elevation and F.pt.depression?
Asked by anukritisingh8103.bmps | 15 Jul, 2020, 17:52: PM
answered-by-expert Expert Answer
Boiling Point Elevation-  Elevation in boiling point refers to increase in boiling boint of solvent upon the addition of solute. When a non-volatile solute is added then resulting solution has a higher boiling point then pure solvent. For example- Boiling point of Salt+water solution is more than pure water.
 
 
Freezing Point Depression-Freezing Point Depression refers to lowering of the freezing point of solvents upon the adition of solute. When  a non-volatile solute is added then resulting solution has a lower freezing point then pure solvent. 
 
To know more about boiling point elevation and freezing point depression, Follow the given link-
 
https://www.topperlearning.com/cbse-class-12-science-chemistry/solutions/boiling-and-freezing-points-of-solutions
Answered by Ravi | 15 Jul, 2020, 18:41: PM

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CBSE 12-science - Chemistry
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Asked by chetanrakshit06 | 05 May, 2024, 14:51: PM
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CBSE 12-science - Chemistry
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 | 10 Dec, 2023, 20:21: PM
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CBSE 12-science - Chemistry
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Asked by vekariyaparth61 | 16 May, 2022, 16:33: PM
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CBSE 12-science - Chemistry
Molal elevation constant for benzene is 2.5K/m. A solution of some organic substance in benzene boils at 0.126°C higher than benzene. What is the molality of solution?  
Asked by goyalpavitarta | 03 May, 2021, 13:27: PM
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CBSE 12-science - Chemistry
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 | 03 May, 2021, 13:25: PM
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CBSE 12-science - Chemistry
2.00g of non-electolyte solute dissolved in 100g of benzene, lowered the freezing point of benzene by 0.30K. find the molar mass of solute.
Asked by goyalpavitarta | 03 May, 2021, 13:20: PM
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CBSE 12-science - Chemistry
3gm
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Asked by purvi.naik21 | 17 Aug, 2020, 23:17: PM
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CBSE 12-science - Chemistry
What is colligative property
Asked by sshashu993 | 25 Jul, 2020, 08:02: AM
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CBSE 12-science - Chemistry
Explain B.pt.elevation and F.pt.depression?
Asked by anukritisingh8103.bmps | 15 Jul, 2020, 17:52: PM
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CBSE 12-science - Chemistry
To 500 cm3of water ,3×10^-3 of acetic acid is added .if 23 percent is dissociated  what will be the depression in freezing pt given k1 is 1.86K kg /mol 
Asked by sharmasherryal | 25 May, 2020, 09:54: AM
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