1. A substance has a triple point at 2.0 atm and –35oC on its phase diagram.  If the substance is at –35oC and 2.5 atm pressure and the temperature then increases slightly, the substance will:

Q: What is AH°, for the following phase change? Q (1) → Q (s)

A: Enthalpy change for this phase transition is determined as :

Q: The normal boiling point of naphthalene, C10H8, is 218 °C. What is the its enthalpy of vaporization…

A:

Q: What happens if graphite is subjected to very high pressure st room temperature (+-25)

A: A reaction is said to be in equilibrium if the rate of the forward reaction is equal to the rate of…

Q: Classify the phase changes by the signs of the system's AH and AS. AH = + and AS = + AH = + and AS =…

A:

Q: Which process is nonspontaneous? Select the correct answer below: water freezing at room temperature…

A: We have to predict the non spontaneous process.

Q: Given that ΔHvap is 46.4 kJ/mol, and the boiling point is 83.4°C, 1 atm, if one mole of this…

A: When vaprizaton occur means randomness increase means entropy will increase. So that we calculate…

Q: If the standard molar heats of formation of ammonia, NH3(g), and gaseous water, H20(g), are -46…

A: standard molar heats of formation ammonia, NH3(g) = 46 kJ/mol gaseous water, H20(g) = -242 kJ/mol **…

Q: Indicate whether each statement is true or false An isothermal process is one in which the system…

A: The process in which the temperature of the system remains constant in called an isothermal process.…

Q: Ethanol melts at -114 C and boils at 78 C at a constant pressure of 1 atm. What state of matter must…

A: We have given that  Ethanol melts at -114°C and boils at 78 °C at a constant pressure of 1 atm. What…

Q: Enormous amounts of lime (CaO) are used in steel industry blast furnaces to remove impurities from…

A: The reaction is: Kp = 1/Partial pressure. Then,

Q: In which of the following processes does the energy of the water increase?          water…

A: During water freezes (liquid to solid) and steam condenses to liquid (ggas to liquid) processes…

Q: ?

A: The required expression is given below.

Q: Which of the following processes/reactions has a AG value NOT equal to zero? Select one: a. Boiling…

A: When we boil water at 373K then all amount of heat is given to increase entropy of the system . So…

Q: which of the following phase transitions is/are exothermic? 1. liquid water evaporating into the…

A: In this question, we will selecting those statements which are exothermic process.  Exothermic…

Q: Dry ice sublimes into carbon dioxide at -78.5 °C. What is true about the heat of the system (qsys)…

A: Sublimation is change of state  from solid to gas without changing to liquid state.

Q: 7. Using the phase diagram below determine what phase change is occurring: Final conditions: 1.5…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: In an experiment, 10.0 g of ice at −20.0°C is converted into steam with a temperature of 110.0°C.…

A: Given,  10.0 g of ice at −20.0°C is converted into steam with a temperature of 110.0°C. The required…

Q: Assuming no phase transition, what is the change in Tempe (C°) if 310.0 mL ethanol (molar mass 46.08…

A:

Q: The enthalpy of fusion of Na is 2 kJ/mol.  The enthalpy of vaporization of Na is 98 kJ/mol.…

A: Since the metal is converted from gas to solid  And since 2 moles of Na is being converted in the…

Q: We want to convert 18 g of solid water at -22 "C to vapor at 116 "C. The energy need for this…

A: Given, 18g or 1 mole of H2O at -22°C which is to be heated to 116°C. Formula used: q= mc∆T q = n L…

Q: If a 348 g sample of steam at 127oC is cooled to 103oC, find the change in heat content of the…

A: NOTE : Since you've posted multiple questions,we've solved first question for you. If you want any…

Q: you went for a hike on the mountaintop near your vicinity. to help you regain your strenght…

A: Temperature and pressure conditions may vary with the place and altitudes. These conditions are…

Q: The normal boiling point of benzene is 80 °C. At 100 °C and 1 atm, which term is greater in…

A: The normal boiling point of the benzene is 80oC To determine: At 100∘C and 1 atm, which term is…

Q: Using the figure, which part shows equilibrium between ALL phases of matter (solid, liquid, and…

A:

Q: Depicted below are three-phase diagrams for substance A and substance B, drawn starting in the solid…

A:

Q: At what temperature does the Fe(s)  Fe(g) phase transition occur? (Hint: at phase transition point,…

A: Given: Fe(s)  <----> Fe(g)  ΔH = 415.5 kJ/mol ΔS = 153.4 J/mol · K.

Q: For cyclohexane, the AH° of vaporization is 33.10 kJ/mol and the AS° of vaporization is 111.80…

A: boiling point of cyclohexane = 296.06 K

Q: Careful measurements reveal that the boiling point of water on the top of a mountain is 95.0 °C.…

A: If the vapor pressure is identified at any temperature, and the enthalpy of vaporization is known.…

Q: For the process X(1) → X(g), where X is a metal, AH°=334.4 kJ/mol and Asº-110.1 J/(K-mol). What is…

A: Here I am providing you the relation between Del H and Del S with Temperature  On the image provided…

Q: A 50.0 g sample of Chromium metal was heated to 103 degrees Celcius and then dropped into a beaker…

A: The formula used to calculating the temperature of metal water mixture is as follows: where, Cwater…

Q: Which of the following definitions is correct?     H = G – TS     A = U – TS     G = H + PV…

A: Which equation is correct?

Q: Diphenyl ether, industrially and commercially called Dowtherm is used as an effective heat transfer…

A: Ideal gas law: This law describes the relationship between pressure(P) , volume (V) , temperature…

Q: Consider the following phase diagram: Vaporisation corresponds to which of the points on the…

A: Vaporization is the phase transition process in which liquid converts to gas

Q: Classify the phase changes by the signs of the system's AH and AS. AH = + and AS = + AH = + and AS =…

A: Thermodynamics is branch of chemistry in which we deal with heat absorbed and heat gained by system.

Q: Under normal atmospheric pressure, nitrogen boils (and condenses) at -196oC. When 7.7 g of nitrogen…

A:

Q: Classify the phase changes by the signs of the system's AH and AS. AH = + and AS = + AH = + and AS =…

A:

Q: The critical temperature for benzene is 289 "C. Which of the following statements is TRUE for…

A: The heat of vaporization is temperature dependent, as increasing the temperature the heat of…

Q: 12) Consider the sublimation of iodine at 25.0°C. I2(s) --> I2(g) a) Find ∆ Grxn° at 25.0°C  b) Find…

A: Given reaction is :  I2 (s) --> I2 (g) a) Find ∆Grxn° at 25.0°C b) Find ΔGrxn° at 25.0°C under…

Q: Energy Constants for H2O 334 J/g = Heat of Fusion (Hf) 2260 J/g = Heat of Vaporization (Hv) 2.11…

A:

Q: Which of the following substances (initially at room temperature) dose require the greatest amount…

A: Higher the boiling point greater will be the amount of heat required to melt 1 mol of solid

Q: At 100 ° C, 1 mol of liquid water takes 19400 calories and under one atmosphere pressure, the same…

A: Change in internal energy is zero if temperature is constant because, internal energy is a function…

Q: Steam at a temperature of 113.0°C with a mass of 24.00 grams is cooled until it reaches a final…

A:

Q: When 15.0 grams of steam drops in temperature from 275oC to 250oC, how much heat energy is released?…

A: Specific heat:  Amount of heat energy required to raise the temperature of one unit substance by one…

Q: Consider the process A(0) 73°C A(g) 160.°C, which is carried out at constant pressure. The total AS…

A:

Q: Which is the correct balanced chemical equation for the reaction of solid potassium with liquid…

A: To write the correct balanced equation for the reaction of solid potassium with liquid water.

Q: We need to calculate the vapor pressure at equilibrium when the card is at 35 degrees Celsius.…

A: ∆G° = ∆H° - T∆S° = -2.303RT log K  ∆G° =   -352 x 1000 - 308 x (-899)  = -75108 J = - 2.303 x 8.314…

Q: State the third law of thermodynamics. What is a perfect crystal? How does the third law of…

A: Thermodynamics is the branch of science which deals with the heat, temperature, work, energy.

Q: 3) Propane, C3 Hs, is a liquid in a pressurized barbecue tank but vaporizes instantly as it flows…

A: amount of energy needed for conversion of a liquid to Vapour is known as enthalpy of vaporization .

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.