Study guides, Revision notes & Summaries

CHEM 301 Thermodynamics Exam 4 || All Questions & 100% Correct Answers CHEM 301 Thermodynamics Exam 4 || All Questions & 100% Correct Answers What is the equation for dU? - ANSWER - U=q+w Energy is the... - ANSWER - Capacity to do work or produce heat dH is... - ANSWER - Change in enthalpy dU is... - ANSWER - Change in internal energy dG is... - ANSWER - Change in Gibbs free energy dS is... - ANSWER - Change in entropy What is a state function? - ANSWER - A property of the ...

CHEM 107 Ch. 17: Free Energy and Thermodynamics Exam 4 || Questions & Answers (100% Verified) CHEM 107 Ch. 17: Free Energy and Thermodynamics Exam 4 || Questions & Answers (100% Verified) kinetics, equilibrium, thermodynamics - ANSWER - kinetics: rate = k[A][B] how fast? equilibrium: how far? thermodynamics: will it occur? spontaneous process - ANSWER - occurs w/o ongoing outside intervention - seeking lowest potential energy non-spontaneous process - ANSWER - does not mean impossib...

Chemistry Thermodynamics Test Review || All Questions & Answers (Graded A+) Chemistry Thermodynamics Test Review || All Questions & Answers (Graded A+) What is the change in entropy? - ANSWER - Delta S What is the change in free energy? - ANSWER - Delta G What is the change in enthalpy? - ANSWER - Delta H What heat received by the chemical system from its surroundings? - ANSWER - Q as in Q=mcp(delta)T The internal energy of a system is ____ of the path taken in going from the ini...

What is the first law of thermodynamics? - Energy can be transferred and transformed, but it cannot be created or destroyed. A thermodynamic property. What is the second law of thermodynamics? - Energy has a quality AND quantity. In decreasing quality of energy. Hot > cold What is classical thermodynamics? - This macroscopic approach to the study of thermodynamics that does not require the behaviour of the individual particles What is statistical thermodynamics? - based o...

Conduction - The transfer of heat within an object or between objects by molecular activity, without any net external motion Convection - Process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink. Energy - The ability to do work. Entropy - The function of the state of a thermodynamic system whose change in any differential reversible process is equal to the heat absorbed by the system from its surroundings divided by t...

Thermodynamics - The relationship between properties of a substance and the 'work' and 'heat' which cause a change of state System - A collection of matter (substance or working fluid) enclosed within a defined boundary Boundary - A surface (real or imaginary) which separates the system from its surroundings. It can be rigid or flexible. Surroundings - Matter which is external to the system Closed System - A system where only energy (heat/work) can cross the bounda...

The total amount of energy in an object - internal energy This States that when 2 objects are in contact, heat will flow until they are in thermal equilibrium - 0th law of thermodynamics Heath that is transferred by movement of a fluid - Convection The energy transferred between objects in contact as a result of temperature difference - Conduction A device that uses heat to do work but is 100% efficient and expels excess heat - heat engine A measure of the average m...

CHEM: THERMODYNAMICS NONSTANDARD CONDITIONS If the equilibrium constant is 8.8 at 298 K, what is the value at 353 K? 2 NO2(g) ⇌ N2O4(g) ΔH = −57.2 kJ - Answer- 0.239 What is ∆G when ∆G° is −76.0 kJ and the pressure of each gas is 0.0255 atm at 25°C? 4 HCl(g) + O2(g) ⇌ H2O(g) + 2 Cl2(g) - Answer- −57.8 kJ If the equilibrium constant is 4.9 × 10−6 at 298 K, at what temperature is the value 9.3 × 10−5? 2 ICl(g) ⇌ I2(g) + Cl2(g) ΔH = 26.9 kJ - Answer- 4...

CHE 111 - OQ 8 Thermodynamics Complete the sentence: When heat is transferred to the system, the process is said to be ____________, and the sign of q is __________. 1. exothermic, positive 2. exothermic, negative 3. endothermic, positive 4. endothermic, negative 5. forbidden, indeterminate - Answer- 3. endothermic, positive What is the equation for the formation reaction for gaseous hydrazine, N2 H4, at 25ºC and 1 atm pressure? 1. N2 + H4 (g) → 2NH3 (g) + H2 (g) 2. 2 NH3 (g) + H2 ...

Basic Concepts of Thermodynamics (CHE61404) basic thermodynamics concepts - Answer- state, system, state postulate, equilibrium, process and cycle thermodynamics - Answer- study of the flow and transformation of energy in the universe, and it's ability to cause changes first law of thermodynamics - Answer- Energy can be transferred and transformed, but it cannot be created or destroyed. second law of thermodynamics - Answer- energy has quality and quantity, and processes occur in th...