The entropy change of vaporization (delta Svap) of a compound or element is a. always negative...
The entropy change of vaporization (delta Svap) of a compound or element is
a. always negative
b. always positive
c. sometimes positive and sometimes negative
Homework Answers
option B is the correct answer
always positive
because
The entropy of vaporization is the increase in entropy upon vaporization of a liquid This is always positive since the degree of disorder increases in the transition from a liquid in a relatively small volume to a vapor or gas
Add Answer to:
The entropy change of vaporization (delta Svap) of a
compound or element is
a. always negative...
What is the meaning of delta H (change in enthalpy), delta S (change in entropy) and...
What is the meaning of delta H (change in enthalpy), delta S (change in entropy) and delta G (change in Gibbs free energy) as it relates to mixing two liquids together? In what situations is each of these variables negative/positive?
. The molar enthalpy of vaporization of molecular compounds is A) always negative &n
. The molar enthalpy of vaporization of molecular compounds is A) always negative B) always positive C) negative if the boiling point is below room temperature but positive if the boiling point is above room temperature D) can be negative or positive depending on the substance.
Question 5 The spontaneity of a reaction depends both on the enthalpy change, Delta H, and...
Question 5 The spontaneity of a reaction depends both on the enthalpy change, Delta H, and entropy change, Delta S. Reactions that release energy produce more stable products, and the universe tends toward disorder. Thus, an exothermic reaction with a positive entropy change will always be spontaneous. Mathematically, this relationship can be represented as where Delta G is the change in Gibbs free energy and T is the Kelvin temperature. If Delta G is negative, then the reaction is spontaneous....
Question 12 When delta G is negative (1 point)* entropy is high and enthalpy low entropy...
Question 12 When delta G is negative (1 point)* entropy is high and enthalpy low entropy low and enthalpy high when entropy is negative when entropy is zero Question 13 Question 13 When delta G is negative (1 point) * O initial G is high and final G is low initial G is low and final G is high intial G is in equilibrium with final G O none Question 14 When delta G is negative (1 point) * O...
For the vaporization of a liquid at its boiling point, A(l) → A(g), is the entropy...
For the vaporization of a liquid at its boiling point, A(l) → A(g), is the entropy change of the universe negative, positive, or zero?
For the following scenarios, indicate whether delta G is always positive, always negative, or either positive...
For the following scenarios, indicate whether delta G is always
positive, always negative, or either positive or negative depending
on T. Explain your answer.
For the following scenarios, indicate whether AGº is always +, always -, or either + or - depending on T. Explain your answer. AHºis + and AS is + AH° is + and AS™ is - AH° is - and AS™ is + AH° is - and AS™ is -
If a substance's temperature has decreased then the change in entropy is: a. Negative b. No...
If a substance's temperature has decreased then the change in entropy is: a. Negative b. No change c. Dependent on the substance. d. Dependent on the enthalpy change. e. Positive
Using conditions of spontaneity to deduce Signs of delta H and delta S
Reaction A: This reaction is always spontaneous but proceeds faster at temperature is below 45°C Delta H: Positive? Negative? Unknown? Delta S: Positive? Negative? Unknown?Reaction B: this reaction is exothermic and proceed slower at temperature is below 19°CDelta H: Positive? Negative? Unknown? Delta S: Positive? Negative? Unknown?Reaction C: crystallization of a pure compound is spontaneous only below -34°CDelta H: Positive? Negative? Unknown? Delta S: Positive? Negative? Unknown?
O ENTROPY AND FREE ENERGY Calculating entropy change from reversible heat flow The heat of vaporization...
O ENTROPY AND FREE ENERGY Calculating entropy change from reversible heat flow The heat of vaporization AH, of acetone (OC(CH3),) is 32.0 kJ/mol. Calculate the change in entropy AS when 56. g of acetone condenses at 56.5 °C. Be sure your answer contains a unit symbol. Round your answer to 2 significant digits. . μ ロロ x
Entropy and Change of State The standard enthalpy of vaporization for CHFCI2 is 242.17 J/g at...
Entropy and Change of State The standard enthalpy of vaporization for CHFCI2 is 242.17 J/g at its normal boiling point of 8.92°C. Calculate the standard entropy of vaporization (AS°vap) of CHFC12(1). Answer to the nearest 0.1 J K-1 mol-1. cf Zumdahl Chemical Principles 8th ed. sec. 10.4 pp 362-5. Submit Answer Tries 0/5
Question 5 The spontaneity of a reaction depends both on the enthalpy change, Delta H, and entropy change, Delta S. Reactions that release energy produce more stable products, and the universe tends toward disorder. Thus, an exothermic reaction with a positive entropy change will always be spontaneous. Mathematically, this relationship can be represented as where Delta G is the change in Gibbs free energy and T is the Kelvin temperature. If Delta G is negative, then the reaction is spontaneous....
Question 12 When delta G is negative (1 point)* entropy is high and enthalpy low entropy low and enthalpy high when entropy is negative when entropy is zero Question 13 Question 13 When delta G is negative (1 point) * O initial G is high and final G is low initial G is low and final G is high intial G is in equilibrium with final G O none Question 14 When delta G is negative (1 point) * O...
For the following scenarios, indicate whether delta G is always
positive, always negative, or either positive or negative depending
on T. Explain your answer.
For the following scenarios, indicate whether AGº is always +, always -, or either + or - depending on T. Explain your answer. AHºis + and AS is + AH° is + and AS™ is - AH° is - and AS™ is + AH° is - and AS™ is -
O ENTROPY AND FREE ENERGY Calculating entropy change from reversible heat flow The heat of vaporization AH, of acetone (OC(CH3),) is 32.0 kJ/mol. Calculate the change in entropy AS when 56. g of acetone condenses at 56.5 °C. Be sure your answer contains a unit symbol. Round your answer to 2 significant digits. . μ ロロ x
Entropy and Change of State The standard enthalpy of vaporization for CHFCI2 is 242.17 J/g at its normal boiling point of 8.92°C. Calculate the standard entropy of vaporization (AS°vap) of CHFC12(1). Answer to the nearest 0.1 J K-1 mol-1. cf Zumdahl Chemical Principles 8th ed. sec. 10.4 pp 362-5. Submit Answer Tries 0/5
Most questions answered within 3 hours.
-
A 8.15- g bullet from a 9-mm pistol has a velocity of 366.0 m/s.
It strikes...
asked 27 seconds ago -
The Problem: The Case of the Harmonizing Vacations
Your CEO is exploring partnering with a European...
asked 1 hour ago -
A chemical equation is balanced by adding coefficients in front
of some formulas so that the...
asked 1 hour ago -
From the literature (reference your sources): What are the
lattice parameters of calcite and aragonite? Why...
asked 2 hours ago -
Your system is rejecting the question am asking which is
preceded by a case study. It...
asked 2 hours ago -
3. On January 2, 2000, Larry creates a trust with himself as
trustee. Larry as trustee...
asked 2 hours ago -
A member of the volleyball team spikes the ball. During this
process, she changes the velocity...
asked 2 hours ago -
Are adult gamers less likely to use a gaming console (Xbox,
PlayStation, Wii, etc...) than teen...
asked 3 hours ago -
The University of
Texas recently reported that 43% of college students aged 18-24
would spend their...
asked 3 hours ago -
The length of stay at a specific emergency department in
Phoenix, Arizona, in 2009 had a...
asked 2 hours ago -
. Please give the mechanism for this type of problem. Step by
Step
The toxin that...
asked 2 hours ago -
If you have a 1M stock solution and you want to dilute 1 :10
with water,...
asked 2 hours ago