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CBSE Class 12-science Answered

Q. the molal freezing point constant of watr is 1.86 K molality ^-1 if 342 g of can sugar (C6H22O11) are dissolved in 1000g water the solution will freezze at
 
Q. molal depression of freezing point of water is 1.86 degree per 1000g water . 0002 mole of urea dissolved in 100g of water will produce a lowering of temp. of                                                                                                                                          
Asked by sarvaterahul | 01 Jul, 2016, 08:36: AM
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Answered by Vaibhav Chavan | 01 Jul, 2016, 10:14: AM

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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, 08:21: PM
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CBSE 12-science - Chemistry
solution
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Asked by vekariyaparth61 | 16 May, 2022, 04:33: 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, 01:27: 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, 01:25: 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, 01:20: PM
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CBSE 12-science - Chemistry
3gm
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Asked by purvi.naik21 | 17 Aug, 2020, 11:17: 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, 05:52: 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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CBSE 12-science - Chemistry
two liquids a and b at 120C and 160C which of these liquids has at higher vapour pressure at 90C
Asked by panthpreet0221 | 06 May, 2020, 10:41: AM
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