Why does the plot show vertical jumps at the melting and boiling points? Solid Liquid Gas - Boiling - Melting Temperature (K)→ Entropy, S

Q: Consider the reaction shown below and the tabulated thermochemical data at 298 K. Which of the…

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Q: Calculate entropy change 1. combustion of one gram of methane to form carbon dioxide and liquid…

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Q: Predict whether the entropy change of the system in each of the following is positive or negative.…

A: Note: As there are more than 3 subparts of this question and you have not mentioned that which part…

Q: What is the entropy change when 0.88 moles of CHCI: vaporizes at 61.0 °C? [AH(vap) = 29.6 kJ/mol at…

A: Number of moles = 0.88 moles  ∆H(vap) = 29.6 KJ/mol  Temperature = 61.0 °C  Entropy change = ?

Q: 6. Enthalpy provides a quantitative measure of how much energy is spread out when something happens.…

A: Enthalpy is a state function which measures quantitatively the energy transferred after the reaction…

Q: Which process is necessarily driven by an increase in the entropyof the surroundings?a. the…

A: Entropy is defined as the measure of disorderliness in the system. The formula for the entropy of…

Q: Which of the following statements best describes the entropy of water that freezes in a beaker? a.…

A: The correct option is:

Q: PCI3 boils at 76.1°C, determine the entropy of vaporization given the thermochemical information…

A: Given,

Q: Predict whether the entropy change of the system in each of the following is positive or negative.…

A: Thermodynamics is the branch of chemistry that mainly deals with the heat transfer between system…

Q: At 25°C, the formation of ammonia from its elements results in a decrease in entropy (∆SRXN = -197…

A: we have to calculate the value of ∆SUNIV

Q: entropy

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Q: Consider a substance with a melting point of 176 K. If this substance is in a container at 115 K…

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Q: r entropy

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Q: Adding nitric acid to water is quite exothermic. Calculate the temperature change (A7) when 100.0 mL…

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Q: Calculate the change in entropy that occurs in the system when 1.33 mol of acetone (C3 H6O)…

A: Given: The number of moles of acetone is 1.33 mol The normal boiling point is 56.1oC The heat of…

Q: Identify the change in state that does NOT have an increase in entropy.   a water evaporating   b…

A: Entropy - Measure the randomness or disorderness of molecule  Solid to liquid, liquid to gases…

Q: Which of the following is not considered an extensive property? O Weight O Temperature O Entropy O…

A: Extensive property => properties of substance which are depend on mass or amount of substance.…

Q: What is the chemical significance of a negative enthalpy change and a negative entropy change?

A: Enthalpy change is nothing but the amount of heat evolved or absorbed during a chemical reaction at…

Q: Which of these properties correspond to the amount of disorder in a chemical system?   Group of…

A: Entropy is a measure of the randomness of the system. The entropy change in a chemical reaction can…

Q: Determine the change in extensive entropy for a change in temperature of a unit mass of liquid…

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Q: 5. Sodium acetate dissolves in water according to the following equation: NAC2H3O2 (s) Nat (ag) +…

A: Given process is :  NaC2H3O2 (s) -----> Na+(aq) +C2H3O2-(aq)

Q: When steam condenses onto a cold glass pane, how are the signs and values q for the glass and the…

A: D. qglass  = -qsteam

Q: Indicate whether each statement is true or false. The entropy change of the system is equal and…

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Q: Identify the change in phyical state that is a decrease in entropy.   water boiling   ice melting…

A: Entropy is the measurement of randomness of any substance, if randomness decreases entropy…

Q: Suppose 20 g of ice at 0 °C is added to 300 g of water at 60 °C . What is the total change in…

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Q: 11.Describe the conditions at which the following thermochemical equations are  spontaneous. If you…

A: Chemical Reaction are almost invariably accompanied by energy changes which ordinarily, appear in…

Q: B. Entropy 5. Which of the following are A. Entropy and B. Entropy and

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Q: Which process(es) listed below occur with an increase in entropy? (i) Water in the ocean warms up…

A: Entropy is a measure of the randomness of the molecules of a substance. For a spontaneous reaction…

Q: A system goes from state 1 to state 2 and back to state 1. Suppose the changes in state are…

A: Work done by the system upon going from state 1 to state 2 will be equal to work done upon going…

Q: The heat of vaporization AH, of acetic acid (HCH3CO₂) is 41.0 kJ/mol. Calculate the change in…

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Q: The heat of vaporization AH, of acetic acid (HCH₂CO₂) is 41.0 kJ/mol. Calculate the change in…

A: Given,  The heat of vaporisation of acetic acid,  ∆Hv = 41.0 kJ/mol  Mass of acetic acid = 49 g…

Q: Determine the entropy change, in J/mol K, for the condensing of 75.0 g of gaseous O2 into liquid O2…

A: Here phase of O2 changes from gas to liquid.  Hence we have to use formula for entropy (∆S)during…

Q: A goldfish swims in a large bowl of water at 20 °c . Over a period of time, the fish transfers 120 J…

A: The change in entropy of the water can be determined as follows, dS = dQ/T

Q: The normal boiling point of ethanol is 78.85 °C and the molar enthalpy of vaporization, AHvap, is…

A: When a liquid change to a vapor state the entropy of the system increases. The entropy of…

Q: Estimate the boiling point of an unknown substance in deg C if the latent heat of vaporization of…

A: Answer: Relation between Boiling point, enthalpy of vaporization and entropy of vaporization is…

Q: The normal melting point of ethylene glycol, C₂H6 O2, is -12.7 °C. For the process of melting, what…

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Q: What is the sign for ΔS for the system for each of the following processes?  - +  A hot cup of…

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Q: If a cube of ice at 0°C is placed outside on a warm summer day, the ice will melt spontaneously.…

A: Spontaneous reaction is the one which undergoes by itself without the aid of external help. For a…

Q: What is the sign of the change in entropy of: Heating liquid water to its boiling point

A: Given  sign of the change in entropy of: Heating liquid water to its boiling point

Q: Without doing any calculations, match the following thermodynamic properties with their appropriate…

A: Spontaneity of reaction is governed by its associated enthalpy change, entropy change and absolute…

Q: When there is no heat exchange the change in entropy will be greater than zero True - 1 false -2

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Q: Predict the sign of entropy. Write P if it is positive and N for negative. • sugar dissolving in tea…

A: Entropy is defined as the randomness of the system.

Q: How are the states of matter arranged in increasing entropy of the system?     Solid < Gas <…

A: Entropy is the degree of randomness or disorder and gases have more disorder because particles can…

Q: calculations the entropy change in the meeting of 1 kg of ice at 0 degree Celsius. Heat of fusion of…

A: Given, Heat of fusion of ice is 334.72J/g

Q: Explain how entropy changes in the process of flambéing (combustion of ethanol). Be sure to include…

A: Given question is :  Explain the entropy changes in the process of the flambeing (combustion of…

Q: Use the following data to determine the AH° for the conversion of diamond into graphite:…

A: From given data : Calculate ∆H ° for C(s, diamond) ---&gt; C(s, graphite)

Q: Acetone, CH3 COCH3, boils at 56°C. The heat of vaporızation of acetone at this temperature is 29.1…

A: Given data contains, Boiling point of acetone is 56°C=329 K. Heat of vaporization is 29.1 kJ/mol.…

Q: 11. For which of the following reactions will the entropy of the system decrease? A. 2 NH3(g) …

A: Gas has more entropy than liquid which have more entropy than solid. In the above reaction D. there…