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An aqueous solution containing 1 g of urea boils at 100.25ºC. The aqueous solution containing 3 g of glucose in the same volume will boil at (Molecular weight of urea and glucose are 60 and 180 respectively)
  • a)
    100.75ºC
  • b)
    100.5ºC
  • c)
    100.25ºC
  • d)
    100ºC
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
An aqueous solution containing 1 g of urea boils at 100.25ºC. The...
Elevation in boiling point when urea is dissolved in water:

As wt. of water is constant, hence can be neglected.
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An aqueous solution containing 1 g of urea boils at 100.25ºC. The...
°C at standard atmospheric pressure (1 atm). The boiling point elevation, ΔTb, can be calculated using the following equation:

ΔTb = Kb * molality

where Kb is the molal boiling point elevation constant for water (0.512 °C/m) and molality is the number of moles of solute per kilogram of solvent.

To calculate the molality of the urea solution, we need to first convert the mass of urea to moles:

1 g urea / (60.06 g/mol) = 0.01665 mol urea

The mass of water in the solution can be calculated by subtracting the mass of urea from the total mass of the solution:

Mass of water = 1000 g - 1 g = 999 g

The molality of the solution is then:

molality = 0.01665 mol urea / 0.999 kg water = 0.0167 m

Now we can calculate the boiling point elevation:

ΔTb = 0.512 °C/m * 0.0167 m = 0.0086 °C

Therefore, the boiling point of the urea solution is 100.25 °C + 0.0086 °C = 100.26 °C.
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An aqueous solution containing 1 g of urea boils at 100.25ºC. The...
Elevation in boiling point when urea is dissolved in water:

As wt. of water is constant, hence can be neglected.
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An aqueous solution containing 1 g of urea boils at 100.25ºC. The aqueous solution containing 3 g of glucose in the same volume will boil at (Molecular weight of urea and glucose are 60 and 180 respectively)a)100.75ºCb)100.5ºCc)100.25ºCd)100ºCCorrect answer is option 'C'. Can you explain this answer?
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An aqueous solution containing 1 g of urea boils at 100.25ºC. The aqueous solution containing 3 g of glucose in the same volume will boil at (Molecular weight of urea and glucose are 60 and 180 respectively)a)100.75ºCb)100.5ºCc)100.25ºCd)100ºCCorrect answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about An aqueous solution containing 1 g of urea boils at 100.25ºC. The aqueous solution containing 3 g of glucose in the same volume will boil at (Molecular weight of urea and glucose are 60 and 180 respectively)a)100.75ºCb)100.5ºCc)100.25ºCd)100ºCCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An aqueous solution containing 1 g of urea boils at 100.25ºC. The aqueous solution containing 3 g of glucose in the same volume will boil at (Molecular weight of urea and glucose are 60 and 180 respectively)a)100.75ºCb)100.5ºCc)100.25ºCd)100ºCCorrect answer is option 'C'. Can you explain this answer?.
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