According to the diagram, during a phase change the temperature - F increases G decreases H fluctuates Jremains constant GOS adua to

Q: Which of the following represents an increase in the potential energy of the system? A. Na → Na+ +…

A: Answer:In exothermic process, system loses the energy and its potential energy decreases and in an…

Q: The change in internal energy is a function of what variables O Entropy O Enthalpy O Volume Pressure

A: Interpretation : We have to tell which of the following is an function of internal energy.

Q: Hydrogen gas reacts with sodium hydroxide to form water and sodium spontaneous or non?

A: Hydrogen gas reacts with sodium hydroxide to form water and sodium

Q: 1. Consider the reaction 483.6 kJ mol +2 H2O(g) 2 H2(g) + O2(g) If 2.0 moles of H2O(g) are converted…

A: ∆U is the change in the internal energy of the reaction.

Q: The system ice (s) + energy > water (l) is in equilbrium at 0 degrees Celsius in a closed container.…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Macmillan Learning Suppose a student performed an experiment similar to Experiment 1 and collected…

A: In this specific experiment, a student used a calorimeter to mix cold water with hot water and…

Q: inside a calorimeter is 100 g of water at 39.8 ºC. A 10 g object at 50 ºC is placed inside of a…

A: Mass of water, m=100 g  The initial temperature of water=39.8 ºC Final temperature=40ºC Change in…

Q: Which of the following processes will require the largest amount of heat? a. Raising the temperature…

A:

Q: 4. How much propane (in grams) wnuld have to be combusted to increase the temperature 300 mL of…

A:

Q: 4. Draw a temperature vs. entropy graph for water at 1 atm. Start at -15 C and end at 115 C.

A:

Q: Consider the following equilibrium: N₂ (g) + 3H₂(g) 2NH3(g) AG=-34. KJ Now suppose a reaction vessel…

A: Chemical equilibrium is the condition of a chemical process in which both the reactants and products…

Q: Propane react with chiorine in present of heat is an example of

A: Substitution reaction: A reaction in which an atom or group is replaced by another atom or group is…

Q: For the next set of questions, select the correct state that describes the solubility, in water, at…

A: An ionic compound dissociates in water and is said to be present in the aqueous state in water. Any…

Q: How can you say that the reaction for a certain element is valid?

A: A chemical reaction is symbolic representation of the conversion of substances to new substances. In…

Q: metal from 15 to 20 hoW many the temperature of the Eame eomple of metal from 25°c to 40 c? 23.) If…

A:

Q: The value of delta H° for the reaction below is -72 kJ. H2 (g) + Br2 (g) -> 2 HBr (g) ____ kJ of…

A: Standard enthalpy of reaction is the enthalpy change associated with a reaction. It is designated by…

Q: A 2.50 g block of iron is heated to 355.5 °C then plunged into 50.0 g of water at 25.0 °C. What will…

A: qw = -qm mw × cw × (Tf - Ti) = - { mm × cm ×( Tf-Ti) } 50 × 4.184 × (Tf - 25 ) = - { 2.50 × 0.444 ×…

Q: The following diagram represents the endothermic reaction at equilibrium at 25°C: heat +A(g) →2B(g)…

A: we have to select the correct representation of the system at equilibrium when temperature is 50°C

Q: = -56.04 J/g. Based on this data, calculate 4. The freezing of benzene is exothermic with a AH, the…

A: Given: The moles of benzene = 1 mol. The mass of 1 mol of benzene = 78.11 g. The ∆HFreezing= -56.04…

Q: d QUESTION 1 In order to understand the concept of temperature it is necessary to understand a. the…

A: The objective of the question is to identify which laws of thermodynamics are necessary to…

Q: For the reaction: HCI 40° C

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: Is the AS positive or negative for the following reaction 02(g) + 1/2 02(g) → 03(g) O AS doesn't…

A: We have to predict the sign of change of entropy.

Q: What is the difference between AS and AS°for a chemical change?

A: Entropy is a measure of the randomness of a system. It can have a positive or negative value. It is…

Q: Inside a calorimeter is 100 g of water at 39.8 C. A 10-g object at 50C is placed inside the…

A: Since the metal is at higher temperature than water. Hence to reach equilibrium, metal will lose…

Q: CO₂Me hv heat "F

A:

Q: 15) The release of energy during the formation of a chemical bond 1) Increases the stability of the…

A: Formation of bonds always releases energy. The stronger the bond formed, the more energy will be…

Q: Predict the sign for B. AS° is negative AS° is & 0 C. AS° is positive

A: If entropy increases, then ΔSo is positive.   If entropy decreases, then ΔSo is negative.  Entropy…

Q: 19. The reaction 4Al(s) + 302(g) → 2AI2O3(s) AH° = -3351 kJ is and therefore heat is by the…

A:

Q: Calcuate the amount of heat in kJ neccessary to raise the temperatue of 50.0 g of a substance by…

A:

Q: s reaction endothermic or exothermic? ts) oinnerdtoxca no tobne Additionally, rewrite the…

A:

Q: The sublimation of carbon dioxide at -78°C is Calculate ASsub when 24.8 g of CO2 sublimes at this…

A: given mass of CO2 = 24.8 g molar mass of CO2= 44 g/mol Temperature = -78°C = 273-78 = 195°K

Q: Solid Liquid Gas As the system changes from solid --> liquid --> gas, what is the sign of deltaH and…

A: The order of the strongly bonded particles -  Solid > Liquid > gas

Q: During a(n)_ process, energy is transferred from the system to the surroundings.

A: System : A specified part of the universe with real (or) imaginary boundaries Surroundings : The…

Q: This reaction is exothermic. of ion Products AH Reactants Reaction Progress- Select one: O True O…

A:

Q: . a 0.988-mole sample of argon expands from 25.0 L to 35.0 L at a constant temperature of 350 K.…

A: Given- no. of moles=0.988 moleV1 =25 LV2 = 35 LT = 350 KTo find- gibbs free energy for given…

Q: me substance (in mol)

A:

Q: 4AI (s) + 30 2 (g) → 2 Al 20 3 (s)AH° = -3351 k) is and therefore heat is by the reaction. A)…

A:

Q: NINH, 200 °C KMnO4 HO 1.PB 2. KOH heat, EICH

A: Geminal dihalide with NaNH2 give terminal alkyne as the product which upon hydroboration oxidation…

Q: A serving of a certain yogurt contains 6 g of protein, 21 g carbs, and 4 g of fat. How many Calories…

A:

Q: Your body transforms the from your food into the used for movement. O a Thermal Energy, Radiant…

A: Hence the answer is option no .d Chemical Energy, Kinetic Energy

Q: Proteins in our body are made of particles with the shape of long chains. The image below shows…

A: GIVEN   Proteins in our body are made of particles with the shape of long chains. The image below…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.