Calculate the entropy change for 4 mol of gas that accompanies the bursting of a balloon if the initial pressure is 3.45 atm and the external pressure is 0.98 atm.

Q: Determine the entropy of * H₂(g) + Br2(g) → 2HBr (g)

A: Entropy measures the extent of the randomness of a system. It is represented by S. It increases with…

Q: Consider the following reaction at 298 K. C(graphite) + 2 Cl,(g) CCI, (1) AH = -139 kJ Calculate the…

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Q: With two dice, each numbered 1–6, there are two possible ways to roll a 3. and Thus, for the outcome…

A: Answer is explained below.

Q: Define entropy and state the second law of thermodynamics?

A: Entropy is a thermodynamic property which shows the inaccessibility of a system's thermal energy. It…

Q: Cyclopropane and propylene are isomers that both have the formula C3H6. Based on the molecular…

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Q: Which statement is generally true about the standard molar entropy? It is greater for a a solid than…

A: Entropy, is the measure of randomness of molecules . Since , gas molecules are more random so they…

Q: The standard entropy of diamond is 2.4 J/mol × K. Calculate the entropy per carbon atom in diamond…

A: Entropy of the substance describes the state of disorderliness or randomness of the molecules or…

Q: Calculate the change in entropy of a constant-pressure 10.5 sample of neon when the temperature is…

A: Given No of moles =10.5Final Temperature =T2 = 30.0 °C = (30+273.15) K =303.15 KInitial Temperature…

Q: Calculate the standard entropy change for the reaction at 25 °C. Standard molar entropy values can…

A: For the reaction: HCl(g) + NaOH(s)--> NaCl(s) + H2O(l) ∆Srxn =? J/(K · mol) The values are:…

Q: The entropy for one mole of a substance at 1 atm pressure, usually determined at 298.15 kelvins is…

A: Entropy measure randomness or disorders of the molecule STP means standard temperature is 298.15 k…

Q: At high temperatures, ammonia decomposes to N2 and H2:  2NH3 (g)= n2(g) + 3H2 (g) ΔH for the…

A: Given information, ΔH for the reaction is positive and ΔS are positive. The given decomposition…

Q: Calculate the molar entropy change of the gas that accompanies the bursting of a balloon if the…

A: Given information:  initial pressure is 2.55 atm external pressure is 0.97 atm

Q: If the difference between the enthalpy of the products and that of the reactants is positive and the…

A: A spontaneous reaction is a reaction that favors the formation of products at the conditions under…

Q: 1. Define entropy. How do you calculate standard entropy change for a reaction?

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Q: Given 2 moles of hydrogen and 2 moles of oxygen each at temperature of 100˚C and pressure 1 atm…

A: The entropy change in mixing ideal gas is given by the equation ∆Smix=-nR(xAlnxA+xBlnxB)…

Q: Isomers are molecules that have the same chemical formula but different arrangements of atoms, as…

A: C5H12 has three possible skeletal isomers: n-pentane iso-pentane neo-pentane Their structures are:…

Q: How can you calculate the standard entropy change for a reaction from tables of standard entropies?

A: The standard entropy change for a reaction from tables of standard entropies can be calculated by…

Q: Calculate the standard entropy change for the following reaction. 4 Al(s) + 3 02(g) → 2 Al,O3(s) JK!

A: A numerical problem based on entropy change, which is to be accomplished.

Q: How does entropy predict the spontaneity of any process in the environment?

A: The measurement of the disorderedness of the system is defined as entropy. For example; the melting…

Q: Calculate the absolute entropy, S° , per mole of 03 (g).

A: The enthalpy change of the given reaction can be calculated as,

Q: Calculate the standard entropy change for the following process:…

A: Given reaction is: H2(g) + C2 H4(g) ⟶ C2 H6(g) We know that, ∆S°reaction = ∑n∆S°products -…

Q: Why does the entropy of a gas increase when it expands into a vacuum?

A: Entropy of a system is the measure of the randomness or dis-ordered ness of the system. The entropy…

Q: What general rules apply to predicting whether an entropy change is negative or positive

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

Q: An explosion brings down an old building, leaving behind a pile of rubble. Does this cause a…

A: Given information,      An explosion brings down an old building, leaving behind a pile of rubble.

Q: Calculate the standard entropy change for the reaction at 25 °C. Standard molar entropy values can…

A: Answer: 30.28 J/K

Q: Which of the following is a correct statement about the third law of thermodynamics ? O The entropy…

A: Thermodynamics is the branch of science which deals woth the study of energy changes and their…

Q: Determine the change in entropy for 1.0 mole of an ideal gas originally confined to one- half of a…

A: At constant temperature, change in entropy is calculated using formula :

Q: For the following, under the same conditions of temperature and pressure, choose the one whose…

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Q: Which law states that the entropy of a perfect crystalline substance is zero at the absolute zero of…

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Q: How many microstates are present in a system with an entropy of zero?

A: The entropy (S) and microstates(W) are related by formula : S = kB ln(W)  Here , kB = Boltzmann…

Q: Calculate the entropy, S, when a. W = 18.6 b. W = 50.63 c. W = 14.7 d. W = 2.90

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Q: What are the entropy changes for 1.00 mol of water undergoing reversible  vaporization and fusion at…

A: Given-> Moles = 1 mole ∆Hvap = 40.656 KJ/mole ∆Hfus = 6.009 KJ/mole Boiling point (Tb) = 100°C =…

Q: If an ideal gas at 1.75 atm and 25 degrees Celsius is isothermally compressed from 800 mL to 150 mL,…

A: Initial volume of the gas, V1 =800 mL Final volume, V2 = 150 mL Calculation of initial moles of the…

Q: With two dice, each numbered 1–6, there are two possible ways to roll a 3. and Thus, for the outcome…

A: Solution Entropy is a state function that is often mistakenly referred to as the ‘state of…

Q: How do you predict the entropy of a gas will change if a 2.0 L sample of that gas is compressed to a…

A: The entropy of a system is defined as the measure of randomness between the particles present in a…

Q: The following reactions take place at 25 °C and 1 atm. Calculate the entropy change for urrounding.…

A: The change in entropy of the surroundings is a measure of how much energy is being taken in or given…

Q: Predict which member of each of the following pairs has the greater standard entropy at 25°C: (a)…

A: The given options are : (a). C6H6 (l) or C6H6 (g) (b). CO (g) or CO2 (g) (c). 1 mol N2O4 (g) or 2…

Q: a) The third law of thermodynamics relates the entropy (randomness) of matter to its absolute…

A: Entropy of a system increases with increase of temperature. At absolute zero entropy is minimum.

Q: Calculate the standard entropy change for the reaction; CO2(g) + H20(1) → CH4(9) + O2(g) Note:…

A: The balanced chemical equation is,

Q: Do you need to specify the temperature to calculate the entropy change? Explain.

A: Entropy is the measure of randomness or chaoticness . With increasing in the randomness or…

Q: Is the entropy of a bag of popcorn greater than, less than, or equal to the entropy ofthe kernels of…

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Q: What is the change in entropy of 100g of water it is heated from room temperature 20 degree Celsius…

A: Entropy of a system is defined as the disordness or randomness of a system. It is also obtained by…

Q: Determine the entropy of * 2H2(g) + O2(g) → 2H₂O(1) positive negative

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Q: 2 NO(g) + O2 (g) → 2 NO2(g) AH° = –112 kJ Answer the following questions about the reaction…

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Q: Describe the entropy of water running from a river down to a waterfall.

A: Entropy is the randomness/disarrangement of particles.

Q: Predict which member of each of the following pairs has the greater standard entropy at 25°C: (a)…

A: Standard entropy is defined as the entropy of pure substance under a standard state. It is denoted…

Q: According to the third law of thermodynamics, at what temperature will entropy become zero? A. 0°…

A: Third law of Thermodynamics- The entropy of a perfectly crystalline solid approaches zero as the…

Q: The Third Law of Thermodynamics: The entropy of a perfect crystal at zero Kelvin is zero.  True…

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