menu
Qammunity
Login
Register
My account
Edit my Profile
Private messages
My favorites
Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question
The normal boiling point of water is 100.0 °c and its molar enthalpy of vaporization is 40.67 kj/mol. what is the change in entropy in the system in j/k when 39.3 grams of steam at 1 atm condenses to a
asked
Jan 9, 2019
127k
views
0
votes
The normal boiling point of water is 100.0 °c and its molar enthalpy of vaporization is 40.67 kj/mol. what is the change in entropy in the system in j/k when 39.3 grams of steam at 1 atm condenses to a liquid at the normal boiling point?
Physics
college
Matthias Schreiber
asked
by
Matthias Schreiber
8.2k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
7
votes
ΔS= nΔHvap/T,
Where, ΔS = Change in entropy, n = moles of water = 39.3/18 = 2.188 moles, ΔHvap = 40.67kJ/mol = 40670 J/mol, T = Temperature (K) = 100+272.15 = 373.15 K
Therefore,
ΔS = (2.188*40670)/373.15 = 237.96 J/K
MikeRoger
answered
Jan 15, 2019
by
MikeRoger
8.3k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
Related questions
asked
Jan 13, 2021
191k
views
The heat of vaporization ΔHᵥ of diethyl ether ((CH₃)₂(CH₂)₂O) is 26.7 KJ/mol. Calculate the change in entropy Δs when 3.4 g of diethyl ether condenses at 34.6 °C. Be sure your answer contains a unit symbol
Bluefog
asked
Jan 13, 2021
by
Bluefog
7.8k
points
Chemistry
college
1
answer
2
votes
191k
views
asked
Oct 21, 2020
123k
views
How much heat is released at constant pressure if a 10.0 L tank containing 87.0 atm of hydrogen sulfide gas condenses at its boiling point of -60.0 oC? The enthalpy of vaporization of hydrogen sulfide
ZMabrook
asked
Oct 21, 2020
by
ZMabrook
9.3k
points
Chemistry
high-school
1
answer
5
votes
123k
views
asked
Dec 10, 2018
88.6k
views
The boiling point of a liquid is 64 °c and the enthalpy change for the conversion of this liquid to the gas is 32.21 kj/mole. what is the entropy change for vaporization, δsvap?
Skoky
asked
Dec 10, 2018
by
Skoky
8.2k
points
Chemistry
college
2
answers
4
votes
88.6k
views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.
9.4m
questions
12.2m
answers
Other Questions
At sea level, water boils at 100 degrees celcius and methane boiled at -161 degrees celcius. Which of these substances has a stronger force of attraction between its particles? Explain your answer
Physical properties of minerals graphic organizer
What type of rock is the Haystack rock (igneous, Metamorphic, or Sedimentary)
What is the minimum resistance which can be made using five resistors each of 1/5
What are two things that the amount of gravitational force between two object depends on
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search Qammunity