Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

calculate freezing point of a solution when 54g of glucose is dissolved in 250g of water
Asked by anamikadas355 | 14 Feb, 2020, 11:28: AM
answered-by-expert Expert Answer

Depression of Freezing point can be calculated by-

increment straight T subscript straight f space space equals space straight m cross times straight k subscript straight f Number space of space moles space of space Glucose equals fraction numerator 54 space straight g over denominator 54 space gmol to the power of negative 1 end exponent end fraction Molality space of space Glucose space solution equals 54 over 180 cross times 1000 over 250 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space space 1.20 space space mol space kg to the power of negative 1 end exponent increment straight T subscript straight f space space equals space 1.86 cross times 1.20 space space space space space space space space space equals 2.23 space straight K Temperature space at space which space solutions space freezes equals left parenthesis 273.15 minus 2.23 right parenthesis equals 270.77 space straight K space space or space space 2.23 space to the power of straight o straight C

Answered by Ravi | 14 Feb, 2020, 12:43: PM

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 12-science - Chemistry
solution
question image
Asked by vekariyaparth61 | 16 May, 2022, 04:33: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
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
ANSWERED BY EXPERT ANSWERED BY EXPERT
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
ANSWERED BY EXPERT ANSWERED BY EXPERT
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
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
3gm
question image
Asked by purvi.naik21 | 17 Aug, 2020, 11:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
What is colligative property
Asked by sshashu993 | 25 Jul, 2020, 08:02: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Explain B.pt.elevation and F.pt.depression?
Asked by anukritisingh8103.bmps | 15 Jul, 2020, 05:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
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
ANSWERED BY EXPERT ANSWERED BY EXPERT
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
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
calculate freezing point of a solution when 54g of glucose is dissolved in 250g of water
Asked by anamikadas355 | 14 Feb, 2020, 11:28: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt