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
artcher [175]
3 years ago
9

The heat of vaporization of acetic acid is . Calculate the change in entropy when of acetic acid condenses at .

Chemistry
1 answer:
Umnica [9.8K]3 years ago
8 0

The question is incomplete, the complete question is;

The heat of vaporization ΔHv of acetic acid HCH3CO2 is 41.0 /kJmol. Calculate the change in entropy ΔS when 954.g of acetic acid condenses at 118.1°C. Be sure your answer contains a unit symbol. Round your answer to 3 significant digits.

Answer:

-1.67 JK-1

Explanation:

Since Heat of vaporization of acetic acid = 41.0 kJ/mol

Therefore:

Heat of condensation of acetic acid = -41.0 kJ/mol

Mass of acetic acid = 954 g

Temperature of condensation = 118.1 °C or 391.1 K

Number of moles of acetic acid = 954 g/60g/mol = 15.9 moles

Heat evolved during condensation = 15.9 moles *  -41.0 kJ/mol = -651.9 KJ

Entropy change (ΔS) = Heat evolved/ Temperature = -651.9 KJ/391.1 K

Entropy change (ΔS) = -1.67 JK-1

You might be interested in
How can a Hydrogen atom turn into a<br> Hydrogen ion (H+)?
Butoxors [25]

Answer:

By losing an electron

Explanation:

Electrons have a negative charge. So, losing one would give an element a more positive charge. You can usually find a hydrogen ion (H+) in substances like acids.

3 0
3 years ago
what is the pressure, in atmospheres, of 2.97 mol h2 gas if it has a volume of 73 liters when the temperature is 298 k? 0.50 atm
Triss [41]
P x V = n x R x T

P x 73 = 2.97 x 0.082 x 298

P x 73 = 72.57492

P = 72.57492 / 73

P = 1.0 atm

hope this helps!




6 0
3 years ago
What is the difference in energy between an electron in 1s and an electron in 4s.
Andre45 [30]

Answer:

Explanation:

An electron in 4s is farther away from nucleus and it has higher energy when compared to electron from 1s.

5 0
3 years ago
Please help, will give the brainiest answer
iren2701 [21]

Answer:

Ag+Nano3 yes

MN + Cao.?No

8 0
3 years ago
My cat, Copper, is a picky eater. I've noticed that he eats better when the TV is on. To
jok3333 [9.3K]
I was going to help but I don’t understand the question
8 0
3 years ago
Other questions:
  • To calculate the number of atoms present in 2.0 mol of an element you would:
    9·1 answer
  • How do sulfur and phosphorus move from the biotic to the abiotic pools during their cycle?
    15·1 answer
  • Write an equation that represents the action in water of nitrous acid as an arrhenius acid.
    13·1 answer
  • Why earth not flat and why we live in this country not yours
    7·1 answer
  • A solid has ___ shape and ___ volume can anyone tell me the answer
    9·2 answers
  • What is an example of a polyatomic ion
    5·2 answers
  • <img src="https://tex.z-dn.net/?f=%20%2012.046%20%5Ctimes%20%7B10%7D%20%5E%7B25%7D%20" id="TexFormula1" title=" 12.046 \times {
    10·1 answer
  • Any one free here any gìrl​ bnh-mbxg-bgq / gmeet code​
    11·2 answers
  • Please helpp!! I give brainliest!
    7·2 answers
  • O The Arrhenius Model of acids and bases applies toward substances that are nonaqueous.O The Arrhenius Model of acids and bases
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!