1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elena-2011 [213]
3 years ago
10

Calculate the boiling point of a 3.60 m aqueous sucrose solution. express the boiling point in degrees celsius to five significa

nt figures
Chemistry
2 answers:
kvv77 [185]3 years ago
8 0
We can use this equation for boiling point elevation:
ΔT(b) = i K(b) M
when Δ T(b) is the increase of boiling point of the solution.
and i is ( vant Hoff factor, the number of particles or ions per mole-clue.
and K(b) is boiling point increase constant for the solution ( and for water it is equal 0.52 C° Kg/mol)
We can assume i (vant Hoff factor ) = 1 as the sucrose is nonelectrolyte (not readily ionize).
So for water: Tb° = 100 c° and Kb = 0.52 c° Kg / mol
By substitute at:
ΔTb = i Kb M
∴  = 1 * 0.52 * 3.60 = 1.8432 C°
and when Tb = Tb° + ΔTb
∴  Tb = 100 + 1.8432 = 101.8432 C°



Alex3 years ago
7 0

Boiling point of 3.60 m aqueous sucrose solution is \boxed{101.87\text{ }^{\circ}\text{C}}.

Further Explanation:

Colligative properties are such properties that depend on number of solute particles only, but do not depend on identity of solute. Colligative properties are mentioned below.

1. Relative lowering of vapor pressure

2. Elevation in boiling point

3. Depression in freezing point

4. Osmotic pressure

The formula to calculate elevation in boiling point is as follows:

\Delta\text{T}_{\text{b}}=\text{k}_{\text{b}}\text{m}                                       ...... (1)

Where,

\Delta\text{T}_{\text{b}} is elevation in boiling point.

m is the molality of solution.

\text{k}_{\text{b}} is molal boiling point constant.

The value of m is 3.60 m.

The value of \text{k}_{\text{b}} is 0.512\text{ }^{\circ}\text{C/m}.

Substitute 3.60 m for m and 0.512\text{ }^{\circ}\text{C/m} for \text{k}_{\text{b}} in equation (1).

\begin{aligned}\Delta\text{T}_{\text{b}}&=(0.512\text{ }^{\circ}\text{C/m})(\text{3.60 m})\\&=1.872\text{ }^{\circ}\text{C}\end{aligned}

The boiling point elevation can also be calculated as follows:

\Delta\text{T}_{\text{b}}=\text{Boiling point of sucrose}-\text{Boiling point of pure water}      ...... (2)

Rearrange equation (2) for boiling point of sucrose.

\text{Boiling point of sucrose}=\Delta\text{T}_{\text{b}}+\text{Boiling point of pure water}      ...... (3)

The value of \Delta\text{T}_{\text{b}} is 1.872\text{ }^{\circ}\text{C}\end{aligned}.

The value of boiling point of pure water is 100\text{ }^{\circ}\text{C}\end{aligned}.

Substitute 1.872\text{ }^{\circ}\text{C}\end{aligned} for \Delta\text{T}_{\text{b}} and 100\text{ }^{\circ}\text{C}\end{aligned} for boiling point of pure water in equation (3).

\begin{aligned}\text{Boiling point of sucrose}&=1.872\text{ }^{\circ}\text{C}+100\text{ }^{\circ}\text{C}\\&=101.872\text{ }^{\circ}\text{C}\\&\approx{101.87\text{ }^{\circ}\text{C}}\end{aligned}

Learn more:

1. Which statement is true for Boyle’s law: brainly.com/question/1158880

2. Calculation of volume of gas: brainly.com/question/3636135

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Colligative properties

Keywords: colligative properties, boiling point, osmoctic pressure, depression in freezing point, elevation in boiling point, relative lowering of vapor pressure, solute particles, sucrose, boiling point of sucrose, 3.60 m.

You might be interested in
Which energy conservation takes place when a solar cell
sp2606 [1]

Answer:

Its science and cells

Explanation:

5 0
3 years ago
Read 2 more answers
HELP ME || WILL MARK BRAINLEST ||Which product could contain a substance formed by Reaction B?
lawyer [7]

Answer:

Antacid

Explanation:

Hope this helps:)

7 0
2 years ago
Read 2 more answers
Write three characteristics of mandleef's periodic table?​
Slav-nsk [51]

Answer:

The periodic table is composed of seven horizontal rows or periods and is numbered between 1 and 7. There is a regular gradation in the properties of elements in the horizontal rows(periods) from left to right. The periodic table is composed of eight vertical columns or groups. They are numbered between 1 to 8.

Explanation:

6 0
2 years ago
Which of the following will form a metallic bond with a metal?
lisabon 2012 [21]
It’s really any metal because metals form metallic bonds. They are the only substances which can make metallic bonds. So the answer is A
4 0
2 years ago
Choose the incorrect answer below concerning absolute zero.
Nataly [62]
Is equal to 0 k .This is because an absolute zero temperature is the temperature in which nothing can be cooled. The standard measurment for temperature is celcius which is already 0 but when we are converting 0 K to celcius we will gwt 273 celcius which is definitely not an absolute zero
8 0
3 years ago
Read 2 more answers
Other questions:
  • A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile's engine cooling system. If a car's cooli
    15·1 answer
  • A 25.00-mL aliquot of a nitric acid solution of unknown concentration is pipetted into a 125-mL Erlenmeyer flask and 2 drops of
    6·1 answer
  • b)Elemental boron (as a gas) is produced in one industrial process by heating diboron trioxide with magnesium metal, also produc
    9·1 answer
  • Complete these equations for the ionization of an Arrhenius acid or base in water. Include the states of the products.
    15·1 answer
  • Please answer question vote you brainlest thanks
    10·1 answer
  • An alcohol thermometer makes use of alcohol's changing in order to measure temperature. As the temperature goes up.
    10·1 answer
  • Help answer fast please What is an example of homestasis?
    15·1 answer
  • Oceń prawdziwość podanych informacji w układzie okresowym pierwiastki chemiczne są złożone według NIK to jących się liczbą atomo
    15·1 answer
  • As NH4Cl dissolves in water, and cools the solution,
    6·1 answer
  • 217 mL of neon gas at 551 celsius is brought to standard temperature (0 celsius) while the pressure is held constant. What is th
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!