Reaction spontaneity - Study guides, Class notes & Summaries

CHEM191 Module 2 Exam Questions With 100% Correct Answers What is kinetic energy? - answerenergy of motion what is potential energy? - answerenergy of relative position 0 chemical bonds act as a store of potential energy what happens in terms of heat when a chemical reaction happens? - answerheat (q) is either absorbed or released by the reaction. what is enthalpy? - answerthe heat of reaction measured under conditions of constant pressure. how can the change in enthalpy be determined? ...

General Chemistry Final Exam Study Guide Questions and Answers | Latest Version | 2024/2025 | 100% Pass What is the difference between a homogeneous and heterogeneous mixture? A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has visibly distinct components. How does the concept of molarity differ from molality in solution concentration? Molarity measures concentration as moles of solute per liter of solution, while molality measures moles of...

General Chemistry II Final Exam (ACS) UVU 273 Questions with Verified Answers If the pressure of a gas is increased at constant temperature, the volume ___. - CORRECT ANSWER Decreases If the pressure of a gas is decreased at constant temperature, the volume ___. - CORRECT ANSWER Increases If the volume of a gas is decreased at constant pressure, the temperature ___. - CORRECT ANSWER Decreases P ? T ? V ? - CORRECT ANSWER Pressure does the opposite of volume. Which of the following...

A negative symptom of schizophrenia that limits speech due to lack of spontaneity and flow of conversation - correct answer ALOGIA A fixed false belief with no basis in reality. - correct answer DELUSION Persistent and intrusive recurrent and unwanted thoughts or impulses that cause anxiety. - correct answer OBSESSIONS An excessive ingestion of water causing electrolyte imbalance. - correct answer POLYDIPSIA Feelings of inner restlessness accompanied by mental distress and an inabili...

First Law of Thermodynamics: Energy cannot be _________ or __________. correct answers Created; Destroyed For an exothermic reaction, "lost" heat from the _________ goes into the _____________. correct answers system; surroundings two ways energy "lost" from a system, converted to _____,___ used to do _______,___ correct answers heat, q; work, w Energy conservation requires that the energy change in the system equal the heat released + work done ΔE = ________ ΔE = ________ ...

General Chemistry 2 Test 1 Questions and Answers | Latest Update | 2024/2025 | 100% Pass What factors contribute to the deviation of real gases from ideal gas behavior? Real gases deviate from ideal behavior due to intermolecular forces and the finite volume of gas molecules, which become significant at high pressures and low temperatures. How can you determine the molecular geometry of a molecule using VSEPR theory? The molecular geometry of a molecule can be determined by applyi...

General Chemistry Chapter 1, 2, 3 Test Questions and Answers | Latest Update | 2024/2025 | 100% Pass What is the principle behind using chromatography for separating mixtures? Chromatography separates mixtures based on the differential affinities of compounds for a stationary phase and a mobile phase, allowing components to be isolated and analyzed. How does the concept of entropy relate to the spontaneity of a chemical reaction? Entropy measures the disorder or randomness in a sy...

Chemistry Final Exam (Answered) Oxidation Rules Rule 1: The oxidation number of an element in its free state = 0 (Also true for diatomic elements) -Mg=0,H2=0, C=0 Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion -Mg^2+=+2, Na^+=+1, O^2-=-2 Rule 3: The sum of all oxidation numbers in a neutral compound is zero. The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. Rule 4: The oxidation numb...

Thermodynamics the study of energy transformations thermochemistry applied field to chemical reactions energy the ability to do work or transfer heat work energy used to cause an object that has mass to move heat energy used to cause the temperature of an object to change enthalpy the heat energy absorbed or released by a system during a constant-pressure process deltaH entropy A measure of the dispersion of energy or randomness in a system ...

Understand the concepts of enthalpy (H), entropy (S), free energy (G), and free energy change (ΔG). - ANSWER-Δ-G = favorable/spontaneous (exergonic) Δ+G = not favorable/non-spontaneous (endergonic) ΔG does NOT say anything about rate What is meant by favorability/spontaneity in relation to a chemical reaction? - ANSWER-This refers to what is going to be more likely to happen/form in a chemical reaction. Although entropy is favored by the universe, it isn't seen as often. Every reac...